1
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Lorkowski J, Yorkgitis P, Serrato MR, Gembicky M, Pietraszuk C, Bertrand G, Jazzar R. Genuine Carbene Versus Carbene-Like Reactivity. Angew Chem Int Ed Engl 2024:e202401020. [PMID: 38632078 DOI: 10.1002/anie.202401020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 04/19/2024]
Abstract
Singlet carbenes are not always isolable and often even elude direct detection. When they escape observation, their formation can sometimes be evidenced by in-situ trapping experiments. However, is carbene-like reactivity genuine evidence of carbene formation? Herein, using the first example of a spectroscopically characterized cyclic (amino)(aryl)carbene (CAArC), we cast doubt on the most common carbene trapping reactions as sufficient proof of carbene formation.
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Affiliation(s)
- Jan Lorkowski
- University of California San Diego, Chemistry and Biochemistry, UNITED STATES
| | - Patrick Yorkgitis
- University of California San Diego, Department of Chemistry and Biochemistry, UNITED STATES
| | - Melinda R Serrato
- University of California San Diego, Chemistry and Biochemistry, UNITED STATES
| | - Milan Gembicky
- University of California San Diego, Chemistry and Biochemistry, UNITED STATES
| | | | - Guy Bertrand
- University of California San Diego, Chemistry and biochemistry, UNITED STATES
| | - Rodolphe Jazzar
- CNRS/UCSD, Chemistry, University of California, San Diego, 5213 Pacific Hall,, Department of Chemistry, 92093-0343, La jolla, UNITED STATES
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2
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Talcik J, Serrato MR, Del Vecchio A, Colombel-Rouen S, Morvan J, Roisnel T, Jazzar R, Melaimi M, Bertrand G, Mauduit M. Cyclic (amino)(barrelene)carbene Ru-complexes: synthesis and reactivity in olefin metathesis. Dalton Trans 2024; 53:5346-5350. [PMID: 38450432 DOI: 10.1039/d4dt00102h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The synthesis of ruthenium-complexes with cyclic (amino)(barrelene)carbenes (namely CABCs) as ligands is reported. Isolated in moderate to good yields, these new complexes showed impressive thermal stability at 110 °C over several days. Good catalytic performances were demonstrated in various ring-closing metathesis (RCM), macrocyclic-RCM, ring-closing enyne metathesis (RCEYM), cross-metathesis (CM), and ring-opening cross metathesis (ROCM) reactions.
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Affiliation(s)
- Jakub Talcik
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
| | - Melinda R Serrato
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.
| | - Antonio Del Vecchio
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
| | - Sophie Colombel-Rouen
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
| | - Jennifer Morvan
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
| | - Thierry Roisnel
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.
| | - Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.
| | - Marc Mauduit
- Univ. Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France.
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3
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Vermersch F, Wang VT, Abdellaoui M, Jazzar R, Bertrand G. Ambiphilicity of ring-expanded N-heterocyclic carbenes. Chem Sci 2024; 15:3707-3710. [PMID: 38455021 PMCID: PMC10915854 DOI: 10.1039/d3sc04543a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/18/2024] [Indexed: 03/09/2024] Open
Abstract
N-heterocyclic carbenes, such as imidazole-2-ylidenes and imidazolin-2-ylidenes, the popular class of singlet carbenes introduced by Arduengo in 1991 have not been shown to be ambiphilic owing to the two σ-withdrawing, π-donating amino groups flanking the carbene centre. However, our experimental data suggest that ring-expanded N-heterocyclic carbenes (RE-NHCs), especially the seven and eight membered rings, are significantly ambiphilic. Our results also show that the steric environment in RE-NHCs can become a determining factor for controlling the E-H bond activation.
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Affiliation(s)
- François Vermersch
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093-0358 USA
| | - Victor T Wang
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093-0358 USA
| | - Mehdi Abdellaoui
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California La Jolla San Diego California 92093-0358 USA
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4
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Hu L, Meng G, Chen X, Yoon JS, Shan JR, Chekshin N, Strassfeld DA, Sheng T, Zhuang Z, Jazzar R, Bertrand G, Houk KN, Yu JQ. Enhancing Substrate-Metal Catalyst Affinity via Hydrogen Bonding: Pd(II)-Catalyzed β-C(sp 3)-H Bromination of Free Carboxylic Acids. J Am Chem Soc 2023. [PMID: 37487009 DOI: 10.1021/jacs.3c04223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The achievement of sufficient substrate-metal catalyst affinity is a fundamental challenge for the development of synthetically useful C-H activation reactions of weakly coordinating native substrates. While hydrogen bonding has been harnessed to bias site selectivity in existing C(sp2)-H activation reactions, the potential for designing catalysts with hydrogen bond donors (HBDs) to enhance catalyst-substrate affinity and, thereby, facilitate otherwise unreactive C(sp3)-H activation remains to be demonstrated. Herein, we report the discovery of a ligand scaffold containing a remote amide motif that can form a favorable meta-macrocyclic hydrogen bonding interaction with the aliphatic acid substrate. The utility of this ligand scaffold is demonstrated through the development of an unprecedented C(sp3)-H bromination of α-tertiary and α-quaternary free carboxylic acids, which proceeds in exceedingly high mono-selectivity. The geometric relationship between the NHAc hydrogen bond donor and the coordinating quinoline ligand is crucial for forming the meta-macrocyclophane-like hydrogen bonding interaction, which provides a guideline for the future design of catalysts employing secondary interactions.
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Affiliation(s)
- Liang Hu
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Guangrong Meng
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Joseph S Yoon
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Jing-Ran Shan
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Nikita Chekshin
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Daniel A Strassfeld
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Tao Sheng
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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5
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Lorkowski J, Bouetard D, Yorkgitis P, Gembicky M, Roisnel T, Vanthuyne N, Munz D, Favereau L, Bertrand G, Mauduit M, Jazzar R. Circularly Polarized Luminescence from Cyclic (Alkyl)(Amino) Carbene Derived Propellers. Angew Chem Int Ed Engl 2023:e202305404. [PMID: 37221132 DOI: 10.1002/anie.202305404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 05/25/2023]
Abstract
Organic circularly polarized luminescence (CPL)-active molecular emitters featuring dynamic propeller-like luminophores were prepared in one step from cyclic(alkyl)(amino) carbenes (CAACs). These molecules exhibit through-space arene-arene π- delocalization and rapid intramolecular inter-system crossing (ISC) in line with their helical character.
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Affiliation(s)
- Jan Lorkowski
- UCSD: University of California San Diego, Chemistry and Biochemistry, POLAND
| | - Dylan Bouetard
- Ecole nationale superieure de chimie de Rennes, Chemistry, FRANCE
| | - Patrick Yorkgitis
- UCSD: University of California San Diego, Ecole Nationale Supérieure de Chimie de Rennes, UNITED STATES
| | - Milan Gembicky
- UCSD: University of California San Diego, chemistry and biochemistry, UNITED STATES
| | - Thierry Roisnel
- Ecole nationale superieure de chimie de Rennes, Chemistry, FRANCE
| | - Nicolas Vanthuyne
- Aix-Marseille Université: Aix-Marseille Universite, chemistry, FRANCE
| | - Dominik Munz
- Saarland University: Universitat des Saarlandes, Coordination Chemistry, GERMANY
| | - Ludovic Favereau
- Ecole nationale superieure de chimie de Rennes, Chemistry, FRANCE
| | - Guy Bertrand
- UCSD: University of California San Diego, Chemistry and biochemistry, UNITED STATES
| | - Marc Mauduit
- Ecole nationale superieure de chimie de Rennes, Chemistry, FRANCE
| | - Rodolphe Jazzar
- CNRS/UCSD, Chemistry, University of California, San Diego, 5213 Pacific Hall,, Department of Chemistry, 92093-0343, La jolla, UNITED STATES
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6
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Lorkowski J, Serrato MR, Gembicki M, Mauduit M, Bertrand G, Jazzar R. A Straightforward Access to Cyclic (Alkyl)(amino)carbene Copper (I) Complexes. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202300074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Jan Lorkowski
- UCSD: University of California San Diego chemistry and biochemistry UNITED STATES
| | - Melinda R. Serrato
- UCSD: University of California San Diego Chemistry and Biochemistry UNITED STATES
| | - Milan Gembicki
- UCSD: University of California San Diego Chemistry and Biochemistry UNITED STATES
| | - Marc Mauduit
- ENSCR: Ecole nationale superieure de chimie de Rennes Chimie FRANCE
| | - Guy Bertrand
- UCSD: University of California San Diego Chemistry and Biochemistry UNITED STATES
| | - Rodolphe Jazzar
- CNRS/UCSD Chemistry University of California, San Diego, 5213 Pacific Hall,Department of Chemistry 92093-0343 La jolla UNITED STATES
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7
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Morvan J, Vermersch F, Zhang Z, Vives T, Roisnel T, Crévisy C, Falivene L, Cavallo L, Vanthuyne N, Bertrand G, Jazzar R, Mauduit M. Ambivalent Role of Rotamers in Cyclic(alkyl)(amino)carbene Ruthenium Complexes for Enantioselective Ring-Opening Cross-Metathesis. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Jennifer Morvan
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, Univ Rennes, F-35000 Rennes, France
| | - François Vermersch
- Department of Chemistry and Biochemistry, UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Ziyun Zhang
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Thomas Vives
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, Univ Rennes, F-35000 Rennes, France
| | - Thierry Roisnel
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, Univ Rennes, F-35000 Rennes, France
| | - Christophe Crévisy
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, Univ Rennes, F-35000 Rennes, France
| | - Laura Falivene
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Papa Paolo Giovanni II, 84100 Fisiciano, SA, Italy
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Nicolas Vanthuyne
- Centrale Marseille, iSm2, Aix Marseille Univ., CNRS, F-13013 Marseille, France
| | - Guy Bertrand
- Department of Chemistry and Biochemistry, UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- Department of Chemistry and Biochemistry, UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Marc Mauduit
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, Univ Rennes, F-35000 Rennes, France
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8
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Schaab J, Hamze R, Shi S, Kapper SC, Muthiah Ravinson DS, Estergreen L, Jung MC, Tadle AC, Haiges R, Djurovich PI, Peltier JL, Jazzar R, Bertrand G, Bradforth SE, Thompson ME. Correction to " 'Quick-Silver' from a Systematic Study of Highly Luminescent, Two-Coordinate, d 10 Coinage Metal Complexes. J Am Chem Soc 2023; 145:1470-1471. [PMID: 36576490 DOI: 10.1021/jacs.2c12680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Peltier JL, Serrato MR, Thery V, Pecaut J, Tomás-Mendivil E, Bertrand G, Jazzar R, Martin D. An air-stable radical with a redox-chameleonic amide. Chem Commun (Camb) 2023; 59:595-598. [PMID: 36524847 DOI: 10.1039/d2cc05404c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An air-stable (amino)(amido)radical was synthesized by reacting a cyclic (alkyl)(amino)carbene with carbazoyl chloride, followed by one-electron reduction. We show that an adjacent radical center weakens the amide bond. It enables the amino group to act as a strong acceptor under steric contraint, thus enhancing the stabilizing capto-dative effect.
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Affiliation(s)
- Jesse L Peltier
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Melinda R Serrato
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Valentin Thery
- University Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.
| | - Jacques Pecaut
- University Grenoble Alpes, CEA, CNRS, INAC-SyMMES, UMR 5819, Grenoble 38000, France
| | | | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, USA
| | - David Martin
- University Grenoble Alpes, CNRS, DCM, Grenoble 38000, France.
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10
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Yazdani S, Breyer CJ, Kumari P, Rheingold AL, Jazzar R, Bertrand G, Grotjahn DB. Six-coordinate ruthenium water oxidation catalysts bearing equatorial polypyridinedicarboxylato and axial phosphine ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Gao Y, Kim N, Mendoza SD, Yazdani S, Faria Vieira A, Liu M, Kendrick A, Grotjahn DB, Bertrand G, Jazzar R, Engle KM. (CAAC)Copper Catalysis Enables Regioselective Three-Component Carboboration of Terminal Alkynes. ACS Catal 2022; 12:7243-7247. [PMID: 37143933 PMCID: PMC10153597 DOI: 10.1021/acscatal.2c00614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclic(alkyl)(amino)carbene (CAAC) ligands are found to perturb regioselectivity of the copper-catalyzed carboboration of terminal alkynes, favoring the less commonly observed internal alkenylboron regiosomer through an α-selective borylcupration step. A variety of carbon electrophiles participate in the reaction, including allyl alcohols derivatives and alkyl halides. The method provides a straightforward and selective route to versatile tri-substituted alkenylboron compounds that are otherwise challenging to access.
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Affiliation(s)
- Yang Gao
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
| | - Nana Kim
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
| | - Skyler D. Mendoza
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
| | - Sima Yazdani
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, United States
| | - Andre Faria Vieira
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Mingyu Liu
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
| | - Aaron Kendrick
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
| | - Douglas B. Grotjahn
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Keary M. Engle
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, California 92037, United States
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12
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Vermersch F, Oliveira L, Hunter J, Soleilhavoup M, Jazzar R, Bertrand G. Cyclic (Alkyl)(amino)carbenes: Synthesis of Iminium Precursors and Structural Properties. J Org Chem 2022; 87:3511-3518. [PMID: 35133152 DOI: 10.1021/acs.joc.1c03075] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using readily available preallylated aldehydes, we report a simple and divergent synthesis of cyclic (alkyl)(amino)carbene (CAAC) iminium precursors. Using a combination of crystallographic data and steric maps, we further elaborate on the specific steric properties of CAAC ligands with respect to state-of-the-art phosphine and carbene ligands.
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Affiliation(s)
- François Vermersch
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Luana Oliveira
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Joseph Hunter
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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13
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Morvan J, Vermersch F, Lorkowski J, Talcik J, Vivès T, Roisnel T, Crévisy C, Vanthuyne N, Bertrand G, Jazzar R, Mauduit M. Cyclic(alkyl)(amino)carbene Ruthenium Complexes for Z-Stereoselective (Asymmetric) Olefin Metathesis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01795d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first Z-stereoselective catechodithiolate ruthenium complexes containing cyclic(alkyl)(amino)carbene ligands are reported. Isolated in nearly quantitative yields or in-situ generated, these catalysts demonstrated remarkable Z selectivity (Z/E ratio up to >98/2)...
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14
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Affiliation(s)
- François Vermersch
- UCSD-CNRS Joint Research Laboratory (IRL 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Sima Yazdani
- UCSD-CNRS Joint Research Laboratory (IRL 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
- Department of Chemistry and Biochemistry San Diego State University 5500 Campanile Drive San Diego CA 92182-1030 USA
| | - Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (IRL 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Douglas B. Grotjahn
- Department of Chemistry and Biochemistry San Diego State University 5500 Campanile Drive San Diego CA 92182-1030 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (IRL 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (IRL 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
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15
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Vermersch F, Yazdani S, Junor GP, Grotjahn DB, Jazzar R, Bertrand G. Stable Singlet Carbenes as Organic Superbases. Angew Chem Int Ed Engl 2021; 60:27253-27257. [PMID: 34729888 DOI: 10.1002/anie.202111588] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/18/2021] [Indexed: 11/10/2022]
Abstract
A simple experimental procedure for scaling carbene Brønsted basicity is described. The results highlight the strong basicity of pyrazol-4-ylidenes, a type of mesoionic carbene, also named cyclic-bentallenes (CBA). They are more basic (pKaH >42.7 in acetonitrile) than the popular proazaphosphatrane Verkade bases, and even the Schwesinger phosphazene superbase P4 (t Bu). The basicity of these compounds can readily be tuned, and they are accessible in multigram quantities. These results open new avenues for carbon centered superbases.
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Affiliation(s)
- François Vermersch
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Sima Yazdani
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA.,Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182-1030, USA
| | - Glen P Junor
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Douglas B Grotjahn
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182-1030, USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (IRL 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
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16
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Gao Y, Yazdani S, Kendrick A, Junor GP, Kang T, Grotjahn DB, Bertrand G, Jazzar R, Engle KM. Cyclic (Alkyl)(amino)carbene Ligands Enable Cu‐Catalyzed Markovnikov Protoboration and Protosilylation of Terminal Alkynes: A Versatile Portal to Functionalized Alkenes**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yang Gao
- Department of Chemistry The Scripps Research Institute 10550 N Torrey Pines Road La Jolla CA 92037-1000 USA
| | - Sima Yazdani
- Department of Chemistry and Biochemistry University of California, San Diego UCSD-CNRS Joint Research Laboratory (IRL 3555) La Jolla CA 92093-0358 USA
- Department of Chemistry and Biochemistry San Diego State University 5500 Campanile Drive San Diego CA 92182-1030 USA
| | - Aaron Kendrick
- Department of Chemistry The Scripps Research Institute 10550 N Torrey Pines Road La Jolla CA 92037-1000 USA
| | - Glen P. Junor
- Department of Chemistry and Biochemistry University of California, San Diego UCSD-CNRS Joint Research Laboratory (IRL 3555) La Jolla CA 92093-0358 USA
| | - Taeho Kang
- Department of Chemistry The Scripps Research Institute 10550 N Torrey Pines Road La Jolla CA 92037-1000 USA
| | - Douglas B. Grotjahn
- Department of Chemistry and Biochemistry San Diego State University 5500 Campanile Drive San Diego CA 92182-1030 USA
| | - Guy Bertrand
- Department of Chemistry and Biochemistry University of California, San Diego UCSD-CNRS Joint Research Laboratory (IRL 3555) La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- Department of Chemistry and Biochemistry University of California, San Diego UCSD-CNRS Joint Research Laboratory (IRL 3555) La Jolla CA 92093-0358 USA
| | - Keary M. Engle
- Department of Chemistry The Scripps Research Institute 10550 N Torrey Pines Road La Jolla CA 92037-1000 USA
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17
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Gao Y, Yazdani S, Kendrick A, Junor GP, Kang T, Grotjahn DB, Bertrand G, Jazzar R, Engle KM. Cyclic (Alkyl)(amino)carbene Ligands Enable Cu-Catalyzed Markovnikov Protoboration and Protosilylation of Terminal Alkynes: A Versatile Portal to Functionalized Alkenes*. Angew Chem Int Ed Engl 2021; 60:19871-19878. [PMID: 34159696 DOI: 10.1002/anie.202106107] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/11/2021] [Indexed: 12/19/2022]
Abstract
Regioselective hydrofunctionalization of alkynes represents a straightforward route to access alkenyl boronate and silane building blocks. In previously reported catalytic systems, high selectivity is achieved with a limited scope of substrates and/or reagents, with general solutions lacking. Herein, we describe a selective copper-catalyzed Markovnikov hydrofunctionalization of terminal alkynes that is facilitated by strongly donating cyclic (alkyl)(amino)carbene (CAAC) ligands. Using this method, both alkyl- and aryl-substituted alkynes are coupled with a variety of boryl and silyl reagents with high α-selectivity. The reaction is scalable, and the products are versatile intermediates that can participate in various downstream transformations. Preliminary mechanistic experiments shed light on the role of CAAC ligands in this process.
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Affiliation(s)
- Yang Gao
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA, 92037-1000, USA
| | - Sima Yazdani
- Department of Chemistry and Biochemistry, University of California, San Diego, UCSD-CNRS Joint Research Laboratory (IRL 3555), La Jolla, CA, 92093-0358, USA.,Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182-1030, USA
| | - Aaron Kendrick
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA, 92037-1000, USA
| | - Glen P Junor
- Department of Chemistry and Biochemistry, University of California, San Diego, UCSD-CNRS Joint Research Laboratory (IRL 3555), La Jolla, CA, 92093-0358, USA
| | - Taeho Kang
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA, 92037-1000, USA
| | - Douglas B Grotjahn
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182-1030, USA
| | - Guy Bertrand
- Department of Chemistry and Biochemistry, University of California, San Diego, UCSD-CNRS Joint Research Laboratory (IRL 3555), La Jolla, CA, 92093-0358, USA
| | - Rodolphe Jazzar
- Department of Chemistry and Biochemistry, University of California, San Diego, UCSD-CNRS Joint Research Laboratory (IRL 3555), La Jolla, CA, 92093-0358, USA
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA, 92037-1000, USA
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18
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Affiliation(s)
- Jennifer Morvan
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France
| | - Marc Mauduit
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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19
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Morvan J, Vermersch F, Zhang Z, Falivene L, Vives T, Dorcet V, Roisnel T, Crévisy C, Cavallo L, Vanthuyne N, Bertrand G, Jazzar R, Mauduit M. Optically Pure C1-Symmetric Cyclic(alkyl)(amino)carbene Ruthenium Complexes for Asymmetric Olefin Metathesis. J Am Chem Soc 2020; 142:19895-19901. [PMID: 33185429 DOI: 10.1021/jacs.0c10705] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An expedient access to the first optically pure ruthenium complexes containing C1-symmetric cyclic (alkyl)(amino)carbene ligands is reported. They demonstrate excellent catalytic performances in asymmetric olefin metathesis with high enantioselectivities (up to 92% ee). Preliminary mechanistic insights provided by density functional theory models highlight the origin of the enantioselectivity.
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Affiliation(s)
- Jennifer Morvan
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
| | - François Vermersch
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Ziyun Zhang
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Laura Falivene
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Papa Paolo Giovanni II, 84100 Fisiciano, Italy
| | - Thomas Vives
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
| | - Vincent Dorcet
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
| | - Thierry Roisnel
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
| | - Christophe Crévisy
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia
| | - Nicolas Vanthuyne
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille 13397, France
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Marc Mauduit
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000Rennes, France
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20
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Peltier JL, Tomás-Mendivil E, Tolentino DR, Hansmann MM, Jazzar R, Bertrand G. Realizing Metal-Free Carbene-Catalyzed Carbonylation Reactions with CO. J Am Chem Soc 2020; 142:18336-18340. [DOI: 10.1021/jacs.0c09938] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jesse L. Peltier
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
| | - Eder Tomás-Mendivil
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
- Department of Applied Chemistry, Faculty of Chemistry, University of the Basque Country (UPV-EHU), Donostia-San Sebastián, 20018 Gipuzkoa, Spain
| | - Daniel R. Tolentino
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
| | - Max M. Hansmann
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD−CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093-0358, United States
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21
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Junor GP, Lorkowski J, Weinstein CM, Jazzar R, Pietraszuk C, Bertrand G. The Influence of C(sp
3
)H–Selenium Interactions on the
77
Se NMR Quantification of the π‐Accepting Properties of Carbenes. Angew Chem Int Ed Engl 2020; 59:22028-22033. [DOI: 10.1002/anie.202010744] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Jan Lorkowski
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
- Faculty of Chemistry Department of Organometallic Chemistry Adam Mickiewicz University in Poznań ul, Uniwersytetu Poznanskiego 8 61-614 Poznań Poland
| | - Cory M. Weinstein
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Cezary Pietraszuk
- Faculty of Chemistry Department of Organometallic Chemistry Adam Mickiewicz University in Poznań ul, Uniwersytetu Poznanskiego 8 61-614 Poznań Poland
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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22
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Junor GP, Lorkowski J, Weinstein CM, Jazzar R, Pietraszuk C, Bertrand G. The Influence of C(sp
3
)H–Selenium Interactions on the
77
Se NMR Quantification of the π‐Accepting Properties of Carbenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010744] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Jan Lorkowski
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
- Faculty of Chemistry Department of Organometallic Chemistry Adam Mickiewicz University in Poznań ul, Uniwersytetu Poznanskiego 8 61-614 Poznań Poland
| | - Cory M. Weinstein
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Cezary Pietraszuk
- Faculty of Chemistry Department of Organometallic Chemistry Adam Mickiewicz University in Poznań ul, Uniwersytetu Poznanskiego 8 61-614 Poznań Poland
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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23
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Peltier JL, Soleilhavoup M, Martin D, Jazzar R, Bertrand G. Absolute Templating of M(111) Cluster Surrogates by Galvanic Exchange. J Am Chem Soc 2020; 142:16479-16485. [PMID: 32872772 DOI: 10.1021/jacs.0c07990] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The precise preparation of monodisperse nanomaterials is among the most fundamental tasks in inorganic synthesis and materials science. Achieving this goal by galvanic exchange is hardly predictable and often results in major structural changes and polydisperse mixtures. Taking advantage of the enhanced stability imparted by ambiphilic carbenes, we report and rationalize the absolute templating, the complete exchange of metals in a template, of group 11 clusters across the entire coinage metal family by means of galvanic exchange. We further delineate that these species provide a molecular model for better understanding the reduction of CO2 at M(111) coinage metal surfaces.
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Affiliation(s)
- Jesse L Peltier
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - David Martin
- Universite Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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24
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Affiliation(s)
- Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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25
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Yazdani S, Junor GP, Peltier JL, Gembicky M, Jazzar R, Grotjahn DB, Bertrand G. Influence of Carbene and Phosphine Ligands on the Catalytic Activity of Gold Complexes in the Hydroamination and Hydrohydrazination of Alkynes. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01352] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sima Yazdani
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California 92182-1030, United States
| | - Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
| | - Jesse L. Peltier
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
| | - Milan Gembicky
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
| | - Douglas B. Grotjahn
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, California 92182-1030, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, California 92093-0358, United States
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26
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Mantanona AJ, Tolentino DR, Cay KS, Gembicky M, Jazzar R, Bertrand G, Rinehart JD. Tuning electronic structure through halide modulation of mesoionic carbene cobalt complexes. Dalton Trans 2020; 49:2426-2430. [PMID: 32048665 DOI: 10.1039/c9dt04624k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of Co(ii) mesoionic carbene complexes (CoX2DippMIC2; X = Cl-, Br-, I-) demonstrate a new electronic perturbation on tetrahedral Co(ii) complexes. Using absorption spectroscopy and magnetometry, the consequences of the MIC's strong σ-donating/minimal π-accepting nature are analyzed and shown to be further tunable by the nature of the coordinated halide.
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Affiliation(s)
- Alex J Mantanona
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Daniel R Tolentino
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Kristine S Cay
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Rodolphe Jazzar
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Guy Bertrand
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
| | - Jeffrey D Rinehart
- Department of Chemistry and Biochemistry, University of California - San Diego, La Jolla, CA 92093, USA.
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27
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Romero EA, Chen G, Gembicky M, Jazzar R, Yu JQ, Bertrand G. Understanding the Activity and Enantioselectivity of Acetyl-Protected Aminoethyl Quinoline Ligands in Palladium-Catalyzed β-C(sp 3)-H Bond Arylation Reactions. J Am Chem Soc 2019; 141:16726-16733. [PMID: 31565934 DOI: 10.1021/jacs.9b06746] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Chiral acetyl-protected aminoalkyl quinoline (APAQ) ligands were recently discovered to afford highly active and enantioselective palladium catalysts for the arylation of methylene C(sp3)-H bonds, and herein, we investigate the origins of these heightened properties. Unprecedented amide-bridged APAQ-Pd dimers were predicted by density functional theory (DFT) calculations and were confirmed by single-crystal X-ray diffraction studies. Comparison of structural features between APAQ-Pd complexes and an acetyl-protected aminoethylpyridine APAPy-Pd complex strongly suggests that the high activity of the former originates from the presence of the quinoline ring, which slows the formation of the off-cycle palladium dimer. Furthermore, steric topographic maps for a representative subset of monomeric, monoligated palladium complexes allowed us to draw a unique parallel between the three-dimensional structures of these catalysts and their reported asymmetric induction in β-C(sp3)-H bond arylation reactions. Finally, cooperative noncovalent interactions present between the APAQ ligand and the substrate were identified as a crucial factor for imparting selectivity between chemically equivalent methylenic C(sp3)-H bonds prior to concerted metalation deprotonation activation.
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Affiliation(s)
- Erik A Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Gang Chen
- Department of Chemistry , The Scripps Research Institute , 10550 N. Torrey Pines Road , La Jolla , California 92037 , United States
| | - Milan Gembicky
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Jin-Quan Yu
- Department of Chemistry , The Scripps Research Institute , 10550 N. Torrey Pines Road , La Jolla , California 92037 , United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
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28
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Pichon D, Soleilhavoup M, Morvan J, Junor GP, Vives T, Crévisy C, Lavallo V, Campagne JM, Mauduit M, Jazzar R, Bertrand G. The debut of chiral cyclic (alkyl)(amino)carbenes (CAACs) in enantioselective catalysis. Chem Sci 2019; 10:7807-7811. [PMID: 31588330 PMCID: PMC6761915 DOI: 10.1039/c9sc02810b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 06/26/2019] [Indexed: 12/14/2022] Open
Abstract
The popularity of NHCs in transition metal catalysis has prompted the development of chiral versions as electron-rich neutral stereodirecting ancillary ligands for enantioselective transformations. Herein we demonstrate that cyclic (alkyl)(amino)carbene (CAAC) ligands can also engage in asymmetric transformations, thereby expanding the toolbox of available chiral carbenes.
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Affiliation(s)
- Delphine Pichon
- Ecole Nationale Supérieure de Chimie de Rennes , Univ Rennes , CNRS , ISCR - UMR 6226 , F-35000 Rennes , France .
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , University of California San Diego , La Jolla , California 92093-0353 , USA . ;
| | - Jennifer Morvan
- Ecole Nationale Supérieure de Chimie de Rennes , Univ Rennes , CNRS , ISCR - UMR 6226 , F-35000 Rennes , France .
| | - Glen P Junor
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , University of California San Diego , La Jolla , California 92093-0353 , USA . ;
| | - Thomas Vives
- Ecole Nationale Supérieure de Chimie de Rennes , Univ Rennes , CNRS , ISCR - UMR 6226 , F-35000 Rennes , France .
| | - Christophe Crévisy
- Ecole Nationale Supérieure de Chimie de Rennes , Univ Rennes , CNRS , ISCR - UMR 6226 , F-35000 Rennes , France .
| | - Vincent Lavallo
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , University of California San Diego , La Jolla , California 92093-0353 , USA . ;
| | - Jean-Marc Campagne
- Institut Charles Gerhardt , UMR 5253 CNRS-UM2-UM1-ENSCM , 8 Rue l'Ecole Normale , 34296 Montpellier , France
| | - Marc Mauduit
- Ecole Nationale Supérieure de Chimie de Rennes , Univ Rennes , CNRS , ISCR - UMR 6226 , F-35000 Rennes , France .
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , University of California San Diego , La Jolla , California 92093-0353 , USA . ;
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , University of California San Diego , La Jolla , California 92093-0353 , USA . ;
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Hamze R, Shi S, Kapper SC, Muthiah Ravinson DS, Estergreen L, Jung MC, Tadle AC, Haiges R, Djurovich PI, Peltier JL, Jazzar R, Bertrand G, Bradforth SE, Thompson ME. Correction to “ ‘Quick-Silver’ from a Systematic Study of Highly Luminescent, Two-Coordinate, d 10 Coinage Metal Complexes”. J Am Chem Soc 2019; 141:10118. [DOI: 10.1021/jacs.9b06147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tolentino DR, Neale SE, Isaac CJ, Macgregor SA, Whittlesey MK, Jazzar R, Bertrand G. Reductive Elimination at Carbon under Steric Control. J Am Chem Soc 2019; 141:9823-9826. [PMID: 31180660 DOI: 10.1021/jacs.9b04957] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It has been previously demonstrated that stable singlet electrophilic carbenes can behave as metal surrogates in the activation of strong E-H bonds (E = H, B, N, Si, P), but it was believed that these activations only proceed through an irreversible activation barrier. Herein we show that, as is the case with transition metals, the steric environment can be used to promote reductive elimination at carbon centers.
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Affiliation(s)
- Daniel R Tolentino
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Samuel E Neale
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh EH14 4AS , United Kingdom
| | - Connie J Isaac
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , United Kingdom
| | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh EH14 4AS , United Kingdom
| | - Michael K Whittlesey
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , United Kingdom
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
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31
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Hamze R, Shi S, Kapper SC, Muthiah Ravinson DS, Estergreen L, Jung MC, Tadle AC, Haiges R, Djurovich PI, Peltier JL, Jazzar R, Bertrand G, Bradforth SE, Thompson ME. "Quick-Silver" from a Systematic Study of Highly Luminescent, Two-Coordinate, d 10 Coinage Metal Complexes. J Am Chem Soc 2019; 141:8616-8626. [PMID: 31062972 DOI: 10.1021/jacs.9b03657] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A systematic study is presented on the physical and photophysical properties of isoelectronic and isostructural Cu, Ag, and Au complexes with a common amide (N-carbazolyl) and two different carbene ligands (i.e., CAAC = (5 R,6 S)-2-(2,6-diisopropylphenyl)-6-isopropyl-3,3,9-trimethyl-2-azaspiro[4.5]decan-2-ylidene, MAC = 1,3-bis(2,6-diisopropylphenyl)-5,5-dimethyl-4-keto-tetrahydropyridylidene). The crystal structures of the (carbene)M(I)(N-carbazolyl) (MCAAC) and (MAC)M(I)(N-carbazolyl) (MMAC) complexes show coplanar carbene and carbzole ligands and C-M-N bond angles of ∼180°. The electrochemical properties and energies for charge transfer (CT) absorption and emission compounds are not significantly affected by the choice of metal ion. All six of the (carbene)M(Cz) complexes examined here display high photoluminescence quantum yields of 0.8-1.0. The compounds have short emission lifetimes (τ = 0.33-2.8 μs) that fall in the order Ag < Au < Cu, with the lifetimes of (carbene)Ag(Cz) roughly a factor of 10 shorter than for (carbene)Cu(Cz) complexes. Detailed temperature-dependent photophysical measurements (5-325 K) were carried out to determine the singlet and triplet emission lifetimes (τfl and τph, respectively) and the energy difference between the singlet and triplet excited state, Δ ES1-T1. The τfl values range between 20 and 85 ns, and the τph values are in the 50-200 μs regime. The emission at room temperature is due exclusively to E-type delayed fluorescence or TADF (i.e., T1→ΔS1→S0+hν ). The emission rate at room temperature is fully governed by Δ ES1-T1, with the silver complexes giving Δ ES1-T1 values of 150-180 cm-1 (18-23 meV), whereas the gold and copper complexes give values of 570-590 cm-1 (70-73 meV).
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Affiliation(s)
- Rasha Hamze
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Shuyang Shi
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Savannah C Kapper
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | | | - Laura Estergreen
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Moon-Chul Jung
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Abegail C Tadle
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Ralf Haiges
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Peter I Djurovich
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Jesse L Peltier
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Stephen E Bradforth
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Mark E Thompson
- Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
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Junor GP, Romero EA, Chen X, Jazzar R, Bertrand G. Readily Available Primary Aminoboranes as Powerful Reagents for Aldimine Synthesis. Angew Chem Int Ed Engl 2019; 58:2875-2878. [DOI: 10.1002/anie.201814081] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555)Department of Chemistry and BiochemistryUniversity of California San Diego, La Jolla CA 92093-0358 USA
| | - Erik A. Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555)Department of Chemistry and BiochemistryUniversity of California San Diego, La Jolla CA 92093-0358 USA
| | - Xi Chen
- UCSD-CNRS Joint Research Laboratory (UMI 3555)Department of Chemistry and BiochemistryUniversity of California San Diego, La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555)Department of Chemistry and BiochemistryUniversity of California San Diego, La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555)Department of Chemistry and BiochemistryUniversity of California San Diego, La Jolla CA 92093-0358 USA
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33
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Hamze R, Peltier JL, Sylvinson D, Jung M, Cardenas J, Haiges R, Soleilhavoup M, Jazzar R, Djurovich PI, Bertrand G, Thompson ME. Eliminating nonradiative decay in Cu(I) emitters: >99% quantum efficiency and microsecond lifetime. Science 2019; 363:601-606. [PMID: 30733411 DOI: 10.1126/science.aav2865] [Citation(s) in RCA: 308] [Impact Index Per Article: 61.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 01/02/2019] [Indexed: 12/24/2022]
Abstract
Luminescent complexes of heavy metals such as iridium, platinum, and ruthenium play an important role in photocatalysis and energy conversion applications as well as organic light-emitting diodes (OLEDs). Achieving comparable performance from more-earth-abundant copper requires overcoming the weak spin-orbit coupling of the light metal as well as limiting the high reorganization energies typical in copper(I) [Cu(I)] complexes. Here we report that two-coordinate Cu(I) complexes with redox active ligands in coplanar conformation manifest suppressed nonradiative decay, reduced structural reorganization, and sufficient orbital overlap for efficient charge transfer. We achieve photoluminescence efficiencies >99% and microsecond lifetimes, which lead to an efficient blue-emitting OLED. Photophysical analysis and simulations reveal a temperature-dependent interplay between emissive singlet and triplet charge-transfer states and amide-localized triplet states.
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Affiliation(s)
- Rasha Hamze
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Jesse L Peltier
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Daniel Sylvinson
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Moonchul Jung
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Jose Cardenas
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Ralf Haiges
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Peter I Djurovich
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
| | - Mark E Thompson
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA.
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Junor GP, Romero EA, Chen X, Jazzar R, Bertrand G. Readily Available Primary Aminoboranes as Powerful Reagents for Aldimine Synthesis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Glen P. Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Erik A. Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Xi Chen
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego, La Jolla CA 92093-0358 USA
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35
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Regnier V, Romero EA, Molton F, Jazzar R, Bertrand G, Martin D. What Are the Radical Intermediates in Oxidative N-Heterocyclic Carbene Organocatalysis? J Am Chem Soc 2018; 141:1109-1117. [PMID: 30561990 DOI: 10.1021/jacs.8b11824] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The oxidation of the Breslow intermediate resulting from the addition of an N-heterocyclic carbene (NHC) to benzaldehyde triggers a fast deprotonation, followed by a second electron transfer, directly affording the corresponding acylium at E > -0.8 V (versus Fc/Fc+). Similarly, the oxidation of the cinnamaldehyde analogue occurs at an even higher potential and is not a reversible electrochemical process. As a whole, and contrary to previous beliefs, it is demonstrated that Breslow intermediates, which are the key intermediates in NHC-catalyzed transformations of aldehydes, cannot undergo a single electron transfer (SET) with mild oxidants ( E < -1.0 V). Moreover, the corresponding enol radical cations are ruled out as relevant intermediates. It is proposed that oxidative NHC-catalyzed radical transformations of enals proceed either through SET from the corresponding electron-rich enolate or through coupled electron-proton transfer from the enol, in any case generating neutral capto-dative radicals. Relevant electrochemical surrogates of these paramagnetic species have been isolated.
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Affiliation(s)
| | - Erik A Romero
- UMI CNRS 3555, Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0343 , United States
| | - Florian Molton
- Univ. Grenoble Alpes , CNRS, DCM , 38000 Grenoble , France
| | - Rodolphe Jazzar
- UMI CNRS 3555, Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0343 , United States
| | - Guy Bertrand
- UMI CNRS 3555, Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0343 , United States
| | - David Martin
- Univ. Grenoble Alpes , CNRS, DCM , 38000 Grenoble , France
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36
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Romero EA, Zhao T, Nakano R, Hu X, Wu Y, Jazzar R, Bertrand G. Tandem copper hydride–Lewis pair catalysed reduction of carbon dioxide into formate with dihydrogen. Nat Catal 2018. [DOI: 10.1038/s41929-018-0140-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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37
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Weinstein CM, Junor GP, Tolentino DR, Jazzar R, Melaimi M, Bertrand G. Highly Ambiphilic Room Temperature Stable Six-Membered Cyclic (Alkyl)(amino)carbenes. J Am Chem Soc 2018; 140:9255-9260. [PMID: 29954178 DOI: 10.1021/jacs.8b05518] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyclic (alkyl)(amino)carbenes with a six-membered backbone were prepared. Compared to their five-membered analogues, they feature increased % Vbur and enhanced donor and acceptor properties, as evidenced by the observed n → π* transition trailing into the visible region. The high ambiphilic character even allows for the intramolecular insertion of the carbene into an unactivated C(sp3)-H bond. When used as ligands, they outcompete the five-membered analogues in the palladium-mediated α-arylation of ketones with aryl chlorides.
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Affiliation(s)
- Cory M Weinstein
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Glen P Junor
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Daniel R Tolentino
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Mohand Melaimi
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92093-0358 , United States
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38
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Romero EA, Peltier JL, Jazzar R, Bertrand G. Catalyst-free dehydrocoupling of amines, alcohols, and thiols with pinacol borane and 9-borabicyclononane (9-BBN). Chem Commun (Camb) 2018; 52:10563-5. [PMID: 27498971 DOI: 10.1039/c6cc06096j] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Contrary to recent reports, the dehydrocoupling of pinacol borane and 9-borabicyclononane with a variety of amines, alcohols and thiols can be achieved under mild conditions without catalyst. This process involves the formation of Lewis acid-base adducts featuring a hydridic B-H in close proximity to an acidic Nu-H.
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Affiliation(s)
- Erik A Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA.
| | - Jesse L Peltier
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA.
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA.
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA.
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39
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Mahoney JK, Regnier V, Romero EA, Molton F, Royal G, Jazzar R, Martin D, Bertrand G. The serendipitous discovery of a readily available redox-bistable molecule derived from cyclic(alkyl)(amino)carbenes. Org Chem Front 2018. [DOI: 10.1039/c8qo00447a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A simple redox bistable system is available in one step from a stable carbene and a bis(acyl chloride).
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Affiliation(s)
- Janell K. Mahoney
- UCSD-CNRS Joint Research Laboratory (UMI 3555)
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - Vianney Regnier
- UMR CNRS 5250
- Département de Chimie Moléculaire
- Université Grenoble-Alpes
- 38058 GRENOBLE cedex 9
- France
| | - Erik A. Romero
- UCSD-CNRS Joint Research Laboratory (UMI 3555)
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - Florian Molton
- UMR CNRS 5250
- Département de Chimie Moléculaire
- Université Grenoble-Alpes
- 38058 GRENOBLE cedex 9
- France
| | - Guy Royal
- UMR CNRS 5250
- Département de Chimie Moléculaire
- Université Grenoble-Alpes
- 38058 GRENOBLE cedex 9
- France
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555)
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - David Martin
- UMR CNRS 5250
- Département de Chimie Moléculaire
- Université Grenoble-Alpes
- 38058 GRENOBLE cedex 9
- France
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555)
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
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40
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Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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41
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Melaimi M, Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments. Angew Chem Int Ed Engl 2017; 56:10046-10068. [DOI: 10.1002/anie.201702148] [Citation(s) in RCA: 507] [Impact Index Per Article: 72.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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42
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Tomás-Mendivil E, Hansmann MM, Weinstein CM, Jazzar R, Melaimi M, Bertrand G. Bicyclic (Alkyl)(amino)carbenes (BICAACs): Stable Carbenes More Ambiphilic than CAACs. J Am Chem Soc 2017; 139:7753-7756. [DOI: 10.1021/jacs.7b04640] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Eder Tomás-Mendivil
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
- Department
of Applied Chemistry, Faculty of Chemistry, University of the Basque Country (UPV-EHU), Donostia-San Sebastián, 20018 Gipuzkoa, Spain
| | - Max M. Hansmann
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Cory M. Weinstein
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Mohand Melaimi
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS
Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry
and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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43
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Hansmann MM, Ruiz DA, Liu LL, Jazzar R, Bertrand G. (Phosphanyl)phosphaketenes as building blocks for novel phosphorus heterocycles. Chem Sci 2017; 8:3720-3725. [PMID: 28580107 PMCID: PMC5437511 DOI: 10.1039/c7sc00300e] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 03/07/2017] [Indexed: 11/23/2022] Open
Abstract
Although BH3 simply coordinates the endocyclic P of (phospholidino)phosphaketene 1Dipp, the bulkier B(C6F5)3 gives rise to a zwitterionic diphosphirenium, which is a novel type of 2π-electron aromatic system as shown by the calculated NICS values.
Although BH3 simply coordinates the endocyclic P of (phospholidino)phosphaketene 1Dipp, the bulkier B(C6F5)3 gives rise to a zwitterionic diphosphirenium, which is a novel type of 2π-electron aromatic system as shown by the calculated NICS values. While the reaction of 1Dipp with Na[PCO(dioxane)x] is unselective, the same reaction with the sterically bulky (phospholidino)phosphaketene 1Ar** [Ar** = 2,6-bis[di(4-tert-butylphenyl)methyl]-4-methylphenyl selectively affords a sodium bridged dimer containing a hitherto unknown λ3,λ5,λ3-triphosphete core. The latter formally results from “P–” addition to a 1,3-P/C-dipole. Similarly, adamantyl isonitrile adds to 1Dipp giving a 4-membered phosphacycle. In contrast to 1, the phosphaketene derived from the electrophilic diazaphospholidine-4,5-dione is unstable and reacts with a second molecule of Na[PCO(dioxane)x] to afford a 1,3,4-oxadiphospholonide derivative.
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Affiliation(s)
- Max M Hansmann
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry , University of California San Diego , La Jolla , CA 92093-0343 , USA .
| | - David A Ruiz
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry , University of California San Diego , La Jolla , CA 92093-0343 , USA .
| | - Liu Leo Liu
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry , University of California San Diego , La Jolla , CA 92093-0343 , USA .
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry , University of California San Diego , La Jolla , CA 92093-0343 , USA .
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry , University of California San Diego , La Jolla , CA 92093-0343 , USA .
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44
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Romero EA, Olsen PM, Jazzar R, Soleilhavoup M, Gembicky M, Bertrand G. Spectroscopic Evidence for a Monomeric Copper(I) Hydride and Crystallographic Characterization of a Monomeric Silver(I) Hydride. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700858] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Erik A. Romero
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Pauline M. Olsen
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Michele Soleilhavoup
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Milan Gembicky
- UCSD Crystallography Facility Department of Chemistry and Biochemistry Urey Hall Room 5128 9500 Gilman Drive, M/C 0358 La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
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45
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Romero EA, Olsen PM, Jazzar R, Soleilhavoup M, Gembicky M, Bertrand G. Spectroscopic Evidence for a Monomeric Copper(I) Hydride and Crystallographic Characterization of a Monomeric Silver(I) Hydride. Angew Chem Int Ed Engl 2017; 56:4024-4027. [DOI: 10.1002/anie.201700858] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Erik A. Romero
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Pauline M. Olsen
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Michele Soleilhavoup
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Milan Gembicky
- UCSD Crystallography Facility Department of Chemistry and Biochemistry Urey Hall Room 5128 9500 Gilman Drive, M/C 0358 La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
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46
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Mahoney JK, Jazzar R, Royal G, Martin D, Bertrand G. The Advantages of Cyclic Over Acyclic Carbenes To Access Isolable Capto-Dative C-Centered Radicals. Chemistry 2017; 23:6206-6212. [PMID: 28105672 DOI: 10.1002/chem.201700144] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 11/05/2022]
Abstract
A cyclic and an acyclic di(amino)carbene as well as a cyclic and an acyclic (alkyl)(amino)carbene cleanly react with benzoyl chloride to give the corresponding adducts 1+cyc , 1+acy , 2+cyc , and 2+acy , respectively. The reduction of 1+cyc and 2+cyc derived from cyclic carbenes affords the corresponding radicals 1cyc and 2cyc that are stable at room temperature. In contrast, radicals 1acy and 2acy , derived from acyclic carbenes, cannot be isolated. It is shown that 1acy is as thermodynamically stabilized as its cyclic counterpart 1cyc , but its instability is the result of β-hydrogens of the nitrogen substituent, along with the enhanced flexibility around C-N bonds, which allow for a H. -migration-elimination process. Radical 2acy is thermodynamically unstable, and undergoes disproportionation into the corresponding iminium 2+acy and enolate 2-acy . This is due to the excessive steric hindrance, which prevents electron-delocalization on the NCCO fragment, and thus, the capto-dative stabilization. This work suggests general guidelines for the design of highly persistent (amino)(carboxy)radicals, especially by emphasizing the key advantage of cyclic patterns.
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Affiliation(s)
- Janell K Mahoney
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093-0358, USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093-0358, USA
| | - Guy Royal
- Département de Chimie Moléculaire (UMR 5250), Université Grenoble-Alpes, CNRS, CS 40700, 38058, Grenoble Cedex 9, France
| | - David Martin
- Département de Chimie Moléculaire (UMR 5250), Université Grenoble-Alpes, CNRS, CS 40700, 38058, Grenoble Cedex 9, France
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093-0358, USA
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47
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Hamze R, Jazzar R, Soleilhavoup M, Djurovich PI, Bertrand G, Thompson ME. Phosphorescent 2-, 3- and 4-coordinate cyclic (alkyl)(amino)carbene (CAAC) Cu(i) complexes. Chem Commun (Camb) 2017; 53:9008-9011. [DOI: 10.1039/c7cc02638b] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-, 3- and 4-coordinate CAAC–Cu(i) complexes were prepared and all were found to display phosphorescent emission with microsecond lifetimes.
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Affiliation(s)
- Rasha Hamze
- Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | | | | | | | - Guy Bertrand
- Department of Chemistry
- University of California
- La Jolla
- USA
| | - Mark E. Thompson
- Department of Chemistry
- University of Southern California
- Los Angeles
- USA
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48
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Romero EA, Jazzar R, Bertrand G. Copper-catalyzed dehydrogenative borylation of terminal alkynes with pinacolborane. Chem Sci 2017; 8:165-168. [PMID: 28451161 PMCID: PMC5308285 DOI: 10.1039/c6sc02668k] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 08/04/2016] [Indexed: 11/28/2022] Open
Abstract
LCuOTf complexes [L = cyclic (alkyl)(amino)carbenes (CAACs) or N-heterocyclic carbenes (NHCs)] selectively promote the dehydrogenative borylation of C(sp)-H bonds at room temperature. It is shown that σ,π-bis(copper) acetylide and copper hydride complexes are the key catalytic species.
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Affiliation(s)
- Erik A Romero
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry and Biochemistry , University of California San Diego , La Jolla , CA 92093-0358 , USA .
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry and Biochemistry , University of California San Diego , La Jolla , CA 92093-0358 , USA .
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555) , Department of Chemistry and Biochemistry , University of California San Diego , La Jolla , CA 92093-0358 , USA .
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49
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Goutierre AS, Trinh HV, Larini P, Jazzar R, Baudoin O. Comparative Structural Analysis of Biarylphosphine Ligands in Arylpalladium Bromide and Malonate Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne-Sophie Goutierre
- Université Claude Bernard Lyon 1, CNRS UMR 5246 - Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, CPE Lyon, 43 Boulevard du 11 Novembre
1918, 69622 Villeurbanne, France
| | - Huu Vinh Trinh
- Université Claude Bernard Lyon 1, CNRS UMR 5246 - Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, CPE Lyon, 43 Boulevard du 11 Novembre
1918, 69622 Villeurbanne, France
| | - Paolo Larini
- Université Claude Bernard Lyon 1, CNRS UMR 5246 - Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, CPE Lyon, 43 Boulevard du 11 Novembre
1918, 69622 Villeurbanne, France
| | - Rodolphe Jazzar
- Université Claude Bernard Lyon 1, CNRS UMR 5246 - Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, CPE Lyon, 43 Boulevard du 11 Novembre
1918, 69622 Villeurbanne, France
| | - Olivier Baudoin
- Université Claude Bernard Lyon 1, CNRS UMR 5246 - Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires, CPE Lyon, 43 Boulevard du 11 Novembre
1918, 69622 Villeurbanne, France
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50
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Abstract
A room-temperature stable (phosphino)-phosphinidene reacts with carbon monoxide, stable singlet carbenes, including the poor π-accepting imidazol-2-ylidene, and phosphines giving rise to the corresponding phosphaketene, phosphinidene-carbene and phosphinidene-phosphine adducts, respectively. Whereas the electronic ground-state calculations indicate a PP multiple bond character in which the terminal phosphorus is negatively charged, the observed reactivity clearly indicates that (phosphino)phosphinidenes are electrophilic as expected for an electron-deficient species. This is further demonstrated by competition experiments as well as by the results of Fukui function calculations.
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Affiliation(s)
- Max M Hansmann
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093-0358, United States
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