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King RP, Krska SW, Buchwald SL. A Neophyl Palladacycle as an Air- and Thermally Stable Precursor to Oxidative Addition Complexes. Org Lett 2021; 23:7927-7932. [PMID: 34613744 DOI: 10.1021/acs.orglett.1c02307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The utilization of isolated Palladium Oxidative Addition Complexes (OACs) has had a significant impact on Pd-catalyzed and Pd-mediated cross-coupling reactions. Despite their importance, widespread utility of OACs has been limited by the instability of their precursor complexes. Herein, we report the use of Cámpora's palladacycle as a new, more stable precursor to Pd OACs. Using this palladacycle, a series of biarylphosphine ligated OACs, including those with pharmaceutical-derived aryl halides and relevance to bioconjugation, were prepared.
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Affiliation(s)
- Ryan P King
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shane W Krska
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Budiman YP, Jayaraman A, Friedrich A, Kerner F, Radius U, Marder TB. Palladium-Catalyzed Homocoupling of Highly Fluorinated Arylboronates: Studies of the Influence of Strongly vs Weakly Coordinating Solvents on the Reductive Elimination Process. J Am Chem Soc 2020; 142:6036-6050. [PMID: 32134642 DOI: 10.1021/jacs.9b11871] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
C-C reductive elimination from [PdL2(C6F5)2] to form polyfluorinated biaryls has been a challenge for over 50 years. Thus, palladium-catalyzed homocoupling of arylboronates (ArF-Bpin) containing two ortho-fluorine substituents is very difficult, as the reaction typically stops at the [PdL2(ArF)2] stage after two transmetalation steps. The transmetalated complexes cis-[Pd(MeCN)2(C6F5)2] (3a), cis-[Pd(MeCN)2(2,4,6-C6F3H2)2] (3b), and cis-[Pd(MeCN)2(2,6-C6F2H3)2] (3e) have been isolated from the reaction of ArF-Bpin with Pd(OAc)2 in acetonitrile solvent, with no homocoupling observed. However, catalytic homocoupling proceeds smoothly in a "weakly coordinating" arene solvent as long as no ancillary ligands or coordinating solvents are present. DFT computations reveal that the active catalyst formed by arene solvent coordination leads to an overall reduced barrier for the reductive elimination step compared to the formation of stable [PdL2(ArF)2] complexes in the presence of a donor ligand or solvent L.
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Affiliation(s)
- Yudha P Budiman
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, 45363 Jatinangor, Indonesia
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Arroyo M, Gómez‐Iglesias P, Santos Melero J, Schildbach D, Unkelbach C, Strohmann C, Villafañe F. Bridging Pseudohalides in Palladacycles as a Source of Different Assemblies. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marta Arroyo
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain, Fax: +34‐983‐423‐013
| | - Patricia Gómez‐Iglesias
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain, Fax: +34‐983‐423‐013
| | - José Santos Melero
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain, Fax: +34‐983‐423‐013
| | - Daniel Schildbach
- Technische Universität Dortmund, Anorganische Chemie, Otto‐Hahn‐Straße 6, 44227 Dortmund, Germany, Fax: +49‐231‐755‐7062
| | - Christian Unkelbach
- Technische Universität Dortmund, Anorganische Chemie, Otto‐Hahn‐Straße 6, 44227 Dortmund, Germany, Fax: +49‐231‐755‐7062
| | - Carsten Strohmann
- Technische Universität Dortmund, Anorganische Chemie, Otto‐Hahn‐Straße 6, 44227 Dortmund, Germany, Fax: +49‐231‐755‐7062
| | - Fernando Villafañe
- IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain, Fax: +34‐983‐423‐013
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Bennett MA, Kar G, Mirzadeh N, Privér SH, Rae AD, Wagler J, Willis AC, Bhargava SK. Bidentate Chelate Complexes of Palladium(II) with the Carbanion 2-C6F4PPh2 and Their Transformation into Complexes Containing Bridging 2-C6F4PPh2. Organometallics 2011. [DOI: 10.1021/om200179v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin A. Bennett
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Gopa Kar
- School of Applied Sciences (Applied Chemistry), RMIT University, GPO Box 2476 V, Melbourne, Victoria 3001, Australia
| | - Nedaossadat Mirzadeh
- School of Applied Sciences (Applied Chemistry), RMIT University, GPO Box 2476 V, Melbourne, Victoria 3001, Australia
| | - Steven H. Privér
- School of Applied Sciences (Applied Chemistry), RMIT University, GPO Box 2476 V, Melbourne, Victoria 3001, Australia
| | - A. David Rae
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Jörg Wagler
- Institut für Anorganische Chemie, Technische Universität Bergakademie, Freiberg D-09596, Germany
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Suresh K. Bhargava
- School of Applied Sciences (Applied Chemistry), RMIT University, GPO Box 2476 V, Melbourne, Victoria 3001, Australia
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Bortoluzzi M, Paolucci G, Pitteri B, Vavasori A, Bertolasi V. Synthesis and Reactivity of Mixed-Ligand Palladium(II) Organometallic Complexes with Phosphites and Bis(pyrazol-1-yl)methane. Organometallics 2009. [DOI: 10.1021/om900146a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marco Bortoluzzi
- Dipartimento di Chimica, Università Ca’ Foscari di Venezia, Calle Larga S. Marta Dorsoduro 2137, 30121 Venezia, Italy, and Dipartimento di Chimica e Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy
| | - Gino Paolucci
- Dipartimento di Chimica, Università Ca’ Foscari di Venezia, Calle Larga S. Marta Dorsoduro 2137, 30121 Venezia, Italy, and Dipartimento di Chimica e Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy
| | - Bruno Pitteri
- Dipartimento di Chimica, Università Ca’ Foscari di Venezia, Calle Larga S. Marta Dorsoduro 2137, 30121 Venezia, Italy, and Dipartimento di Chimica e Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy
| | - Andrea Vavasori
- Dipartimento di Chimica, Università Ca’ Foscari di Venezia, Calle Larga S. Marta Dorsoduro 2137, 30121 Venezia, Italy, and Dipartimento di Chimica e Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy
| | - Valerio Bertolasi
- Dipartimento di Chimica, Università Ca’ Foscari di Venezia, Calle Larga S. Marta Dorsoduro 2137, 30121 Venezia, Italy, and Dipartimento di Chimica e Centro di Strutturistica Diffrattometrica, Università di Ferrara, Via L. Borsari 46, 44100 Ferrara, Italy
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Bartolomé C, Espinet P, Martín-Álvarez J, Villafañe F. Bis(fluoromesityl) Palladium Complexes, Archetypes of Steric Crowding and Axial Protection byortho Effect− Evidence for Dissociative Substitution Processes− Observation of19F−19F Through-Space Couplings. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300756] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Sánchez G, Serrano JL, Momblona F, Ruiz F, Garcı́a J, Pérez J, López G, Chaloner PA, Hitchcock P. New mono- and bis(pentafluorophenyl)palladium(II) complexes with iminophosphine ligands. Crystal structure of [Pd(C6F5)(SC6H5)(o-Ph2PC6H4–CHNiPr)]. Polyhedron 2001. [DOI: 10.1016/s0277-5387(00)00659-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kuang SM, Fanwick PE, Walton RA. Involvement of multiply bonded dirhenium complexes in mixed-metal assemblies. Isolation and characterization of a new type of Re4Pd2 cluster. Inorg Chem 2000; 39:2968-9. [PMID: 11196890 DOI: 10.1021/ic000250g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S M Kuang
- Department of Chemistry, Purdue University, 1393 Brown Building, West Lafayette, Indiana 47907-1393, USA
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Sánchez G, Serrano J, Ruiz F, López G. Bis(pentafluorophenyl)nickel(II) complexes with α-diimines and iminophosphines. J Fluor Chem 1998. [DOI: 10.1016/s0022-1139(98)00221-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Espinet P, Martı́nez-Ilarduya JM, Pérez-Briso C, Casado AL, Alonso M. 3,5-dichlorotrifluorophenyl complexes, aryl derivatives with simple 19F NMR structural probes. The synthesis of general precursors for Pd- and Pt complexes. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(97)00424-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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García MP, Jiménez MV, Lahoz FJ, Oro LA. Dinuclear pentafluorophenyl compounds of rhodium(III) with anionic bridging ligands. Molecular structures of [P(CH2Ph)Ph3]2[{Rh(C6F5)3}2(µ-SCN)2] and [P(CH2Ph)Ph3]2[{Rh(C6F5)3}2(µ-CO3)]. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/dt9950000917] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Ruiz J, Vicente C, Martí JM, Cutillas N, García G, López G. Synthesis and characterization of hydroxo, pyrazolato and carboxylato derivatives of the PdR(PPh3)moiety (R = C6F5 or C6Cl5). J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)83152-l] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kakkar AK, Khan MS. Palladium. Coord Chem Rev 1993. [DOI: 10.1016/0010-8545(93)80002-m] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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López G, Ruiz J, García G, Vicente C, Martí JM, Hermoso JA, Vegas A, Martínez-Ripoll M. Synthesis and reactivity of hydroxo-bridged binuclear platinum complexes. Crystal structure of [NBu4]2[{Pt(C6F5)2(µ-OH)}2]. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/dt9920000053] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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López G, García G, Sánchez G, Santana MD, Ruiz J, García J. Synthesis and reactivity towards some weak, protic acids of the di-μ-hydroxo-bis[bis(2,4,6-trifluorophenyl)palladate(II)] ion. Inorganica Chim Acta 1991. [DOI: 10.1016/s0020-1693(00)80372-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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López G, García G, Sánchez G, de Haro C, Santana MD, Casabó J, Caldés M, Mejías M, Molins E, Miravitlles C. Asymmetric homo- and hetero-bimetallic complexes of the nickel group elements. Crystal structure of [(C6F5)2Pd(µ-Cl)2Pt(PEt3)2]. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/dt9910003311] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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