1
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Lu S, Agata R, Nomura S, Matsuda H, Isozaki K, Nakamura M. Regioselective Propargylic Suzuki-Miyaura Coupling by SciPROP-Iron Catalyst. J Org Chem 2024. [PMID: 38684935 DOI: 10.1021/acs.joc.4c00168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The iron-catalyzed Suzuki-Miyaura cross-coupling of secondary propargyl electrophiles with lithium organoborates has been established. A propyl-bridged bulky bisphosphine ligand, SciPROP-TB, cooperated with the bulky TIPS substituent at the alkyne terminal position to achieve the cross-coupling reaction with exclusive propargylic selectivity. The reaction features high functional group compatibility, regioselectivity, and yield with a broad substrate scope. The reaction of an optically active chiral propargyl bromide proceeds with complete racemization, supporting a mechanism involving propargyl radical formation.
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Affiliation(s)
- Siming Lu
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Ryosuke Agata
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Satsuki Nomura
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Matsuda
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Katsuhiro Isozaki
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masaharu Nakamura
- International Research Center of Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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2
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Miyazaki Y, Michigami K, Ohashi M. Isolation of Cationic η 3-Allenylnickel(II) Key Intermediate Complexes: Origins of Enantioselectivity and Regioselectivity in Nickel(0)-Catalyzed Asymmetric Propargylic Substitutions. J Am Chem Soc 2024; 146:8757-8767. [PMID: 38498989 DOI: 10.1021/jacs.4c01738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Herein, we report the synthesis and isolation of cationic η3-allenylnickel(II) complexes that bear rac-BINAP as a bidentate ligand for the first time via Me3SiOTf-promoted C-O bond cleavage of propargylic tert-butyl carbonate. In contrast, in the presence of the monodentate phosphine ligand PEt3, treatment of propargylic tert-butyl carbonate with Ni(cod)2 resulted in a gradual C-O bond cleavage leading to η1-allenylnickel(II) complexes, i.e., trans-(PEt3)2Ni(η1-CPh═C═CHR)(OBoc). X-ray diffraction and NMR spectroscopy studies of [(η3-RCH-CCPh)Ni(rac-BINAP)](OTf) revealed that the complex adopts an η3-allenyl coordination mode both in the crystal lattice and in solution. A thorough structural comparison between [(η3-RCH-CCPh)Ni(rac-BINAP)](OTf) and palladium and platinum analogues revealed that the η3-allenyl moiety in the nickel complex is similar to that observed in palladium and platinum complexes, albeit that each Ni-C bond is shorter than the corresponding Pd-C and Pt-C bonds due to the smaller ionic radius of nickel to that of Pd or Pt. The reactions of either N-methylaniline or sodium N-methylanilide with [(η3-RCH-CCPh)Ni((R)-BINAP)](OTf) furnished (R)-PhC≡CCH(NMePh)Me as an asymmetric propargylic substitution (APS) product with excellent enantioselectivity. Furthermore, when the nickel-catalyzed APS reaction of propargylic tert-butyl carbonate with N-methylaniline was conducted in DMSO at 60 °C in the presence of 5 mol % of [(η3-RCH-CCPh)Ni((R)-BINAP)](OTf) and 7.5 mol % of sodium N-methylanilide as a catalytic precursor and an additive, respectively, (R)-PhC≡CCH(NMePh)Me was obtained in 79% yield with 90% ee. The experimental results and computational calculations strongly suggest that the nickel-catalyzed APS reaction might proceed via a cationic η3-allenylnickel(II) species as the key reaction intermediate.
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Affiliation(s)
- Yusuke Miyazaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Kenichi Michigami
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi-Ku, Osaka 558-8585, Japan
| | - Masato Ohashi
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sugimoto, Sumiyoshi-Ku, Osaka 558-8585, Japan
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3
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Kent GT, Yu X, Wu G, Autschbach J, Hayton TW. Synthesis and electronic structure analysis of the actinide allenylidenes, [{(NR 2) 3}An(CCCPh 2)] - (An = U, Th; R = SiMe 3). Chem Sci 2021; 12:14383-14388. [PMID: 34880989 PMCID: PMC8580070 DOI: 10.1039/d1sc04666g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/02/2021] [Indexed: 11/26/2022] Open
Abstract
The reaction of [AnCl(NR2)3] (An = U, Th, R = SiMe3) with in situ generated lithium-3,3-diphenylcyclopropene results in the formation of [{(NR2)3}An(CH[double bond, length as m-dash]C[double bond, length as m-dash]CPh2)] (An = U, 1; Th, 2) in good yields after work-up. Deprotonation of 1 or 2 with LDA/2.2.2-cryptand results in formation of the anionic allenylidenes, [Li(2.2.2-cryptand)][{(NR2)3}An(CCCPh2)] (An = U, 3; Th, 4). The calculated 13C NMR chemical shifts of the Cα, Cβ, and Cγ nuclei in 2 and 4 nicely reproduce the experimentally assigned order, and exhibit a characteristic spin-orbit induced downfield shift at Cα due to involvement of the 5f orbitals in the Th-C bonds. Additionally, the bonding analyses for 3 and 4 show a delocalized multi-center character of the ligand π orbitals involving the actinide. While a single-triple-single-bond resonance structure (e.g., An-C[triple bond, length as m-dash]C-CPh2) predominates, the An[double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash]CPh2 resonance form contributes, as well, more so for 3 than for 4.
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Affiliation(s)
- Greggory T Kent
- Department of Chemistry and Biochemistry, University of California Santa Barbara Santa Barbara CA 93106 USA
| | - Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York Buffalo NY 14260 USA
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California Santa Barbara Santa Barbara CA 93106 USA
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York Buffalo NY 14260 USA
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry, University of California Santa Barbara Santa Barbara CA 93106 USA
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4
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Kuribara T, Nakajima M, Nemoto T. Mechanistic Studies of the Pd- and Pt-Catalyzed Selective Cyclization of Propargyl/Allenyl Complexes. J Org Chem 2021; 86:9670-9681. [PMID: 34176262 DOI: 10.1021/acs.joc.1c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Following the discovery of an unusual transition-metal-catalyzed reaction, the elucidation of the underlying mechanism is essential to understand the characteristic reactivity of the metal. We previously reported a synthetic method for tricyclic indoles using Pt-catalyzed Friedel-Crafts-type C-H coupling. In this reaction, the Pt catalyst selectively formed a seven-membered ring, but the Pd catalyst only afforded a six-membered ring. However, the reasons for the different selectivities caused by Pd and Pt were unclear. We performed density functional theory (DFT) calculations and experimental studies to reveal the origin of the different behaviors of the two metals. The calculations revealed that the formation of the six- and seven-membered rings proceeds via η1-allenyl and η3-propargyl/allenyl complexes, respectively. A molecular orbital analysis of the η3-propargyl/allenyl complex revealed that, for the platinum complex, the energy required to convert the unoccupied molecular orbital on the reactive carbon into the lowest unoccupied molecular orbital (LUMO) was lower than that for the palladium complex. In addition, DFT calculations revealed that the combination of platinum and bis[2-(diphenylphosphino)phenyl] ether (DPEphos) reduced the activation energy of the seven-membered cyclization in comparison with palladium or PPh3. Additional experimental studies, including NMR studies and stoichiometric reactions, support the aforementioned examination.
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Affiliation(s)
- Takahito Kuribara
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Masaya Nakajima
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
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5
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Watanabe K, Miyazaki Y, Okubo M, Zhou B, Tsuji H, Kawatsura M. Nickel-Catalyzed Asymmetric Propargylic Amination of Propargylic Carbonates Bearing an Internal Alkyne Group. Org Lett 2018; 20:5448-5451. [DOI: 10.1021/acs.orglett.8b02325] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kouichi Watanabe
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Yusuke Miyazaki
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Masataka Okubo
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Biao Zhou
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Hiroaki Tsuji
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Motoi Kawatsura
- Department of Chemistry, College of Humanities & Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
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6
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Ziyanak F, Kuş M, Alkan-Karadeniz L, Artok L. Palladium-catalysed reactions of conjugated enyne oxiranes with organoborons: A diastereoselective method of the synthesis of 2,4,5-trienol derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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7
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Taç D, Artok L. Palladium-catalyzed coupling of 2-en-4-yne carbonates with terminal alkynes. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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8
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Smith MK, Tunge JA. Palladium-Catalyzed Synthesis of Conjugated Allenynes via Decarboxylative Coupling. Org Lett 2017; 19:5497-5500. [DOI: 10.1021/acs.orglett.7b01751] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mary K. Smith
- Department of Chemistry, The University of Kansas, 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Jon A. Tunge
- Department of Chemistry, The University of Kansas, 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
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9
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Nagae H, Kundu A, Tsurugi H, Mashima K. Propargylic C(sp3)–H Bond Activation for Preparing η3-Propargyl/Allenyl Complexes of Yttrium. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haruki Nagae
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Abhinanda Kundu
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hayato Tsurugi
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry,
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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10
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Canovese L, Visentin F, Scattolin T, Santo C, Bertolasi V. Synthesis and reactivity toward olefin exchange and oxidative addition of some platinum(0) olefin complexes with thioquinolines as spectator ligands. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.03.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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11
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Canovese L, Scattolin T, Visentin F, Santo C. Reactions of palladium(0) olefin complexes stabilized by some different hetero- and homo-ditopic spectator ligands with propargyl halides. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Scattolin T, Visentin F, Santo C, Bertolasi V, Canovese L. Isocyanide insertion across the Pd–C bond of allenyl and propargyl palladium complexes bearing phosphoquinoline as a spectator ligand. Synthesis of a palladium complex bearing a coordinated cyclobutenyl fragment. Dalton Trans 2017; 46:5210-5217. [PMID: 28374876 DOI: 10.1039/c7dt00454k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A palladium complex bearing a cyclobutenyl group directly coordinated to metal has been obtained as a result of the insertion of an isocyanide across the Pd–C bond.
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Affiliation(s)
- Thomas Scattolin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari
- Venice
- Italy
| | - Fabiano Visentin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari
- Venice
- Italy
| | - Claudio Santo
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari
- Venice
- Italy
| | - Valerio Bertolasi
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Ferrara
- Ferrara
- Italy
| | - Luciano Canovese
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari
- Venice
- Italy
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13
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14
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Ruiz-Muelle AB, Oña-Burgos P, Ortuño MA, Oltra JE, Rodríguez-García I, Fernández I. Unprecedented Spectroscopic and Computational Evidence for Allenyl and Propargyl Titanocene(IV) Complexes: Electrophilic Quenching of Their Metallotropic Equilibrium. Chemistry 2016; 22:2427-39. [PMID: 26786999 DOI: 10.1002/chem.201504281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Indexed: 11/10/2022]
Abstract
The synthesis and structural characterization of allenyl titanocene(IV) [TiClCp2 (CH=C=CH2 )] 3 and propargyl titanocene(IV) [TiClCp2 (CH2 -C≡C-(CH2 )4 CH3 )] 9 have been described for the first time. Advanced NMR methods including diffusion NMR methods (diffusion pulsed field gradient stimulated spin echo (PFG-STE) and DOSY) have been applied and established that these organometallics are monomers in THF solution with hydrodynamic radii (from the Stokes-Einstein equation) of 3.5 and 4.1 Å for 3 and 9, respectively. Full (1) H, (13) C, Δ(1) H, and Δ(13) C NMR data are given, and through the analysis of the Ramsey equation, the first electronic insights into these derivatives are provided. In solution, they are involved in their respective metallotropic allenyl-propargyl equilibria that, after quenching experiments with aromatic and aliphatic aldehydes, ketones, and protonating agents, always give the propargyl products P (when carbonyls are employed), or allenyl products A (when a proton source is added) as the major isomers. In all the cases assayed, the ratio of products suggests that the metallotropic equilibrium should be faster than the reactions of 3 and 9 with electrophiles. Indeed, DFT calculations predict lower Gibbs energy barriers for the metallotropic equilibrium, thus confirming dynamic kinetic resolution.
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Affiliation(s)
- Ana Belén Ruiz-Muelle
- Department of Chemistry and Physics, ceiA3, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain
| | - Pascual Oña-Burgos
- Department of Chemistry and Physics, ceiA3, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain
| | - Manuel A Ortuño
- Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n, Barcelona, Cerdanyola del Vallès, 08193, Spain.,Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA
| | - J Enrique Oltra
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva s/n, Granada, 18071, Spain
| | - Ignacio Rodríguez-García
- Department of Chemistry and Physics, ceiA3, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain
| | - Ignacio Fernández
- Department of Chemistry and Physics, ceiA3, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain. .,BITAL, Research Centre for Agricultural and Food Biotechnology, Carretera de Sacramento s/n, Almería, Spain.
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15
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Azami H, Tsukada T, Tanifuji R, Seki R, Iwasaki M. Unprecedented Formation of 2-Aryl-3-oxocyclobut-1-enyl Ligand from 3-Arylpropargyl Chloride, Carbon Monoxide, and Pd(0) or Pt(0) Complex. CHEM LETT 2015. [DOI: 10.1246/cl.150696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hidekazu Azami
- Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology
| | - Takuro Tsukada
- Department of Life Science and Green Chemistry, Faculty of Engineering, Saitama Institute of Technology
| | - Ryutaro Tanifuji
- Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology
| | - Ryosuke Seki
- Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology
| | - Masakazu Iwasaki
- Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology
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16
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Osborne CA, Endean TBD, Jarvo ER. Silver-Catalyzed Enantioselective Propargylation Reactions of N-Sulfonylketimines. Org Lett 2015; 17:5340-3. [PMID: 26506430 PMCID: PMC4962794 DOI: 10.1021/acs.orglett.5b02692] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The
enantioselective silver-catalyzed propargylation of N-sulfonylketimines is described. This reaction proceeds
in high yield and excellent enantiomeric ratio and is compatible with
a wide variety of diaryl- and alkylketimines. Synthetic transformations
of homopropargylic products via enyne ring-closing metathesis, Sonogashira
cross-coupling, and reduction reactions proceed with high stereochemical
fidelity. Both allenyl and propargyl borolane reagents can be used
to obtain homopropargylic products, a distribution most consistent
with a mechanism involving transmetalation of the silver catalyst
with the borolane reagent.
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Affiliation(s)
- Charlotte A Osborne
- Department of Chemistry, University of California , Irvine, California 92697, United States
| | - Thomas B D Endean
- Department of Chemistry, University of California , Irvine, California 92697, United States
| | - Elizabeth R Jarvo
- Department of Chemistry, University of California , Irvine, California 92697, United States
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17
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Cherney AH, Kadunce NT, Reisman SE. Enantioselective and Enantiospecific Transition-Metal-Catalyzed Cross-Coupling Reactions of Organometallic Reagents To Construct C-C Bonds. Chem Rev 2015; 115:9587-652. [PMID: 26268813 PMCID: PMC4566132 DOI: 10.1021/acs.chemrev.5b00162] [Citation(s) in RCA: 612] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Alan H Cherney
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Nathaniel T Kadunce
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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18
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New reactivity of 6,6-bis-donor-substituted pentafulvenes: one-step synthesis of highly substituted [3]cumulene and dihydropentalene. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Karagöz EŞ, Kuş M, Akpınar GE, Artok L. Regio- and Stereoselective Synthesis of 2,3,5-Trienoates by Palladium-Catalyzed Alkoxycarbonylation of Conjugated Enyne Carbonates. J Org Chem 2014; 79:9222-30. [DOI: 10.1021/jo5014993] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ezgi Şule Karagöz
- Department of Chemistry,
Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir Turkey
| | - Melih Kuş
- Department of Chemistry,
Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir Turkey
| | - Gürkan Eray Akpınar
- Department of Chemistry,
Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir Turkey
| | - Levent Artok
- Department of Chemistry,
Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir Turkey
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20
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Daniels DSB, Jones AS, Thompson AL, Paton RS, Anderson EA. Ligand Bite Angle-Dependent Palladium-Catalyzed Cyclization of Propargylic Carbonates to 2-Alkynyl Azacycles or Cyclic Dienamides. Angew Chem Int Ed Engl 2014; 53:1915-20. [DOI: 10.1002/anie.201309162] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Indexed: 11/08/2022]
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21
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Daniels DSB, Jones AS, Thompson AL, Paton RS, Anderson EA. Ligand Bite Angle-Dependent Palladium-Catalyzed Cyclization of Propargylic Carbonates to 2-Alkynyl Azacycles or Cyclic Dienamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309162] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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22
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Ardolino MJ, Eno MS, Morken JP. Stereocontrol in Palladium-Catalyzed Propargylic Substitutions: Kinetic Resolution to give Enantioenriched 1,5-Enynes and Propargyl Acetates. Adv Synth Catal 2013; 355:3413-3419. [PMID: 24839434 PMCID: PMC4019443 DOI: 10.1002/adsc.201300720] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Kinetic resolution during the catalytic allyl-propargyl cross-coupling with chiral starting materials can be accomplished with a chiral Palladium catalyst. These reactions offer ready access to enantiomerically enriched enyne products from simple readily available starting materials.
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Affiliation(s)
| | - Meredith S. Eno
- Department of Chemistry, Boston College, Chestnut Hill, MA 02467 (USA)
| | - James P. Morken
- Department of Chemistry, Boston College, Chestnut Hill, MA 02467 (USA)
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23
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Wisniewska HM, Jarvo ER. Enantioselective Propargylation and Allenylation Reactions of Ketones and Imines. J Org Chem 2013; 78:11629-36. [DOI: 10.1021/jo4019107] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hanna M. Wisniewska
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Elizabeth R. Jarvo
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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24
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Arrate M, Durana A, Lorenzo P, de Lera ÁR, Álvarez R, Aurrecoechea JM. Catalyst- and Solvent-Dependent Stereodivergence in the Intramolecular Et2Zn/Pd0-Promoted Carbonyl Propargylation: Mechanistic Implications. Chemistry 2013; 19:13893-900. [DOI: 10.1002/chem.201301170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Indexed: 11/06/2022]
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25
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Kim YJ, Kim HK, Lee JH, Zheng ZN, Lee SW. Synthesis and structures of η1-allenyl and/or -propargyl Pd(II) complexes and their reactivity toward trimethylsilyl pseudohalides, organic thiols, and N-heterocyclic carbene ligands. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.12.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Ardolino MJ, Morken JP. Construction of 1,5-enynes by stereospecific Pd-catalyzed allyl-propargyl cross-couplings. J Am Chem Soc 2012; 134:8770-3. [PMID: 22594398 DOI: 10.1021/ja302329f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The palladium-catalyzed cross-coupling of chiral propargyl acetates and allyl boronates delivers chiral 1,5-enynes with excellent levels of chirality transfer and can be applied across a broad range of substrates.
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Affiliation(s)
- Michael J Ardolino
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
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27
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Daniels DSB, Thompson AL, Anderson EA. Palladium-katalysierte asymmetrische Synthese von 2-Alkinyl-substituierten Sauerstoffheterocyclen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105720] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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28
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Daniels DSB, Thompson AL, Anderson EA. Palladium-Catalyzed Asymmetric Synthesis of 2-Alkynyl Oxacycles. Angew Chem Int Ed Engl 2011; 50:11506-10. [DOI: 10.1002/anie.201105720] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Indexed: 12/24/2022]
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29
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Kohn BL, Jarvo ER. Palladium-Catalyzed Annulation Reactions for Diastereoselective Cyclopentene Synthesis. Org Lett 2011; 13:4858-61. [DOI: 10.1021/ol2019423] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin L. Kohn
- Department of Chemistry, Univerisity of California-Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Elizabeth R. Jarvo
- Department of Chemistry, Univerisity of California-Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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30
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Kalek M, Stawinski J. Novel, Stereoselective and Stereospecific Synthesis of Allenylphosphonates and Related Compounds via Palladium-Catalyzed Propargylic Substitution. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100119] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Akpınar GE, Kuş M, Üçüncü M, Karakuş E, Artok L. Palladium-Catalyzed Alkoxycarbonylation of (Z)-2-En-4-yn Carbonates Leading to 2,3,5-Trienoates. Org Lett 2011; 13:748-51. [DOI: 10.1021/ol102989q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Eray Akpınar
- Department of Chemistry, Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
| | - Melih Kuş
- Department of Chemistry, Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
| | - Muhammed Üçüncü
- Department of Chemistry, Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
| | - Erman Karakuş
- Department of Chemistry, Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
| | - Levent Artok
- Department of Chemistry, Faculty of Science, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
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32
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Tsutsumi K, Sakai H, Sakonaka K, Yabukami T, Takahashi Y, Nakagai Y, Morimoto T, Tabata K, Kakiuchi K. Mono‐ or Diplatinum Complexes Containing a π‐Conjugated Pentadiynyl Ligand. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.200901191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ken Tsutsumi
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Hayato Sakai
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Kazuyuki Sakonaka
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Tomomi Yabukami
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Yoshiteru Takahashi
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Yuzo Nakagai
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Tsumoru Morimoto
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
| | - Kenji Tabata
- Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, 1‐1 Gakuen Kibanadai‐Nishi, Miyazaki 889‐2155, Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Instituted of Science and Technology (NAIST), 8916‐5 Takayama, Ikoma, Nara 630‐0101, Japan, Fax: +81‐743‐72‐6089
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33
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Williams DR, Shah AA. Regioselective formation of 1,1-disubstituted allenylsilanes via cross-coupling reactions of 3-tri-n-butylstannyl-1-trimethylsilyl-1-propyne. Chem Commun (Camb) 2010; 46:4297-9. [PMID: 20485806 DOI: 10.1039/c0cc00679c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The regioselective Stille cross-coupling reactions of 3-tri-n-butylstannyl-1-trimethylsilyl-1-propyne demonstrate isomerization following the initial transmetalation step resulting in allenyl palladium intermediates for reductive coupling to yield conjugated 1,1-disubstituted allenylsilanes.
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Affiliation(s)
- David R Williams
- Department of Chemistry, Indiana University, 800 E Kirkwood Ave, Bloomington, IN 47405-7102, USA.
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Vaz B, Pereira R, Pérez M, Álvarez R, de Lera AR. Stereoselective Stille Coupling of Enantiopure Haloallenes and Alkenylstannanes for the Synthesis of Allenyl Carotenoids. Experimental and Computational Studies. J Org Chem 2008; 73:6534-41. [DOI: 10.1021/jo800756b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Belén Vaz
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Spain
| | - Raquel Pereira
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Spain
| | - Martín Pérez
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Spain
| | - Rosana Álvarez
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Spain
| | - Angel R. de Lera
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, 36310 Vigo, Spain
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36
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Srihari P, Shyam Sunder Reddy J, Bhunia DC, Mandal SS, Yadav JS. PMA‐SiO2: A Heterogenous Catalyst for O‐, S‐, and N‐Nucleophilic Substitution Reactions of Aryl Propargyl Alcohols. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910801914335] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- P. Srihari
- a Organic Division I , Indian Institute of Chemical Technology , Hyderabad , India
| | | | - Dinesh C. Bhunia
- a Organic Division I , Indian Institute of Chemical Technology , Hyderabad , India
| | - S. S. Mandal
- a Organic Division I , Indian Institute of Chemical Technology , Hyderabad , India
| | - J. S. Yadav
- a Organic Division I , Indian Institute of Chemical Technology , Hyderabad , India
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37
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Chaudhuri PD, Guo R, Malinakova HC. Formation of benzofurans in a stoichiometric annulation reaction between stable Pallada (II) Cycles hypervalent vinyl- and alkynyl(phenyl)iodonium salts. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2007.11.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Takahashi Y, Tsutsumi K, Nakagai Y, Morimoto T, Kakiuchi K, Ogoshi S, Kurosawa H. Mono- and Dipalladium Movement on the π-Conjugated Five-Carbon Chain. Organometallics 2008. [DOI: 10.1021/om700909k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshiteru Takahashi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Ken Tsutsumi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuzo Nakagai
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tsumoru Morimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hideo Kurosawa
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan, and Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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39
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Yoshida M, Okada T, Shishido K. Enantiospecific synthesis of 1,3-disubstituted allenes by palladium-catalyzed coupling of propargylic compounds with arylboronic acids. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.035] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Molander GA, Sommers EM, Neufeldt SR. Palladium(0)-catalyzed synthesis of chiral ene-allenes using alkenyl trifluoroborates. J Org Chem 2006; 71:1563-8. [PMID: 16468806 PMCID: PMC2504514 DOI: 10.1021/jo052201x] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Enantioenriched allenes serve as chiral transfer reagents, making them attractive synthetic targets. Herein, the synthesis of enantioenriched allenes utilizing a Pd(0)-catalyzed cross-coupling reaction of propargylic carbonates and phosphates with alkenyl trifluoroborates is reported. Di-, tri-, and tetrasubstituted allenes were synthesized in moderate to high optical yields. Several racemic allenes possessing various functional groups were also synthesized.
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Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
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41
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Caporusso AM, Zampieri A, Aronica LA, Banti D. Stereoselective Synthesis of Chiral 3-Aryl-1-alkynes from Bromoallenes and Heterocuprates. J Org Chem 2006; 71:1902-10. [PMID: 16496974 DOI: 10.1021/jo0522456] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of chiral 3-aryl-1-alkynes 3 via cross-coupling of 3-alkyl- and 3,3-dialkyl-1-bromo-1,2-dienes 1 and arylbromocuprates (RCuBr)MgBr.LiBr 2 was examined. With phenylcopper reagents and its para-substituted derivatives, as well as with 2-naphthyl cuprates, the reaction gave compounds 3 with high regioselectivity and good yields on the chemically pure product. On the contrary, when ortho-substituted phenyl reagents and 1-naphthyl cuprates were used, the regioselectivity of the process was very dependent upon the steric requirements of the alkyl substituents on the bromoallenic substrate. When the steric bulk was increased, remarkable quantities of isomeric arylallenes 4 were also observed in the reaction mixtures. The high 1,3-anti stereoselectivity of the coupling process allowed us to obtain enantiomerically enriched 3-aryl-1-alkynes from optically active allenic substrates, thus indicating a simple pathway toward the synthesis of quaternary stereogenic centers characterized by an aryl group. A possible cross-coupling mechanism was also suggested to explain the regio- and stereochemical data. For the preparation of omega-functionalized 3-phenyl-1-alkynes, the reaction of 1-bromo-3-phenylpropadiene with Knochel reagents RCu(CN)ZnCl.2LiCl was also studied; this reaction led to the acetylenic compounds in high yields mainly when the R group (also omega-functionalized) on the copper reagent was primary.
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Affiliation(s)
- Anna Maria Caporusso
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Pisa, Via Risorgimento 35, 56126 Pisa, Italy.
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42
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Kjellgren J, Sundén H, Szabó KJ. Palladium Pincer Complex Catalyzed Stannyl and Silyl Transfer to Propargylic Substrates: Synthetic Scope and Mechanism. J Am Chem Soc 2005; 127:1787-96. [PMID: 15701014 DOI: 10.1021/ja043951b] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pincer complex catalyzed substitution of various propargylic substrates could be achieved using tin- and silicon-based dimetallic reagents to obtain propargyl- and allenylstannanes and silanes. These reactions involving chloride, mesylate, and epoxide substrates could be carried out under mild conditions, and therefore many functionalities (such as COOEt, OR, OH, NR, and NAc) are tolerated. It was shown that pincer catalysts with electron-supplying ligands, such as NCN, SCS, and SeCSe complexes, display the highest catalytic activity. The catalytic substitution of secondary propargyl chlorides and primary propargyl chlorides with electron-withdrawing substituents proceeds with high regioselectivity providing the allenyl product. Opening of the propargyl epoxides takes place with an excellent stereo- and regioselectivity to give stereodefined allenylstannanes. Silylstannanes as dimetallic reagents undergo an exclusive silyl transfer to the propargylic substrate affording allenylsilanes with high regioselectivity. According to our mechanistic studies, the key intermediate of the reaction is an organostannane (or silane)-coordinated pincer complex, which is formed from the dimetallic reagent and the corresponding pincer complex catalyst. DFT modeling studies have shown that the trimethylstannyl functionality is transferred to the propargylic substrate in a single reaction step with high allenyl selectivity. Inspection of the TS structures reveals that the trimethylstannyl group transfer is initiated by the attack of the palladium-tin sigma-bond electrons on the propargylic substrate. This is a novel mechanism in palladium chemistry, which is based on the unique topology of the pincer complex catalysts.
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Affiliation(s)
- Johan Kjellgren
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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Affiliation(s)
- Shengming Ma
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China
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44
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Kjellgren J, Sundén H, Szabó KJ. Palladium Pincer Complex-Catalyzed Trimethyltin Substitution of Functionalized Propargylic Substrates. An Efficient Route to Propargyl- and Allenyl-Stannanes. J Am Chem Soc 2003; 126:474-5. [PMID: 14719938 DOI: 10.1021/ja0391715] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium pincer complex-catalyzed reaction of functionalized propargyl chloride (and mesylate) derivatives with hexamethylditin gives allenyl- and propargyl-stannane products. This catalytic activity is in sharp contrast with the reactivity of commonly used palladium(0) catalysts inducing addition of hexamethylditin to the triple bond. The product distribution of the pincer complex-catalyzed reaction is controlled by the substituent effects of the propargylic substrate: electron-withdrawing functionalities give mainly allenyl stannane products, while with electron-donating groups the main product is propargyl stannane. The catalytic reaction proceeds under very mild conditions tolerating many functionalities such as OH, OAc, NR3, and NR2Ac groups. Our mechanistic studies indicate that the key intermediate of the reaction is a monotrimethylstannane palladium pincer complex. A remarkable feature of the studied catalytic process is that the palladium catalyst does not undergo redox reactions, but its oxidation state is restricted to palladium(II). Since palladium(0) intermediates does not occur in this process, the catalyst is very stable and highly chemoselective.
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Affiliation(s)
- Johan Kjellgren
- Department of Organic Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
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45
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Aurrecoechea JM, Gil JH, López B. Substituent effects on the SmI2/Pd(0)-promoted carbohydrate ring-contraction of 5-alkynylpyranosides. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)01103-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Tsutsumi K, Yabukami T, Fujimoto K, Kawase T, Morimoto T, Kakiuchi K. Effects of a Bidentate Phosphine Ligand on Palladium-Catalyzed Nucleophilic Substitution Reactions of Propargyl and Allyl Halides with Thiol. Organometallics 2003. [DOI: 10.1021/om030120q] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ken Tsutsumi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Tomomi Yabukami
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Kouji Fujimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Tomohiro Kawase
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Tsumoru Morimoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama, Ikoma, Nara 630-0192, Japan
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47
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Kondo T, Kanda Y, Baba A, Fukuda K, Nakamura A, Wada K, Morisaki Y, Mitsudo TA. Ruthenium-catalyzed s-propargylation of thiols enables the rapid synthesis of propargylic sulfides. J Am Chem Soc 2002; 124:12960-1. [PMID: 12405818 DOI: 10.1021/ja027750o] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and highly efficient catalytic system based on CpRuClL2 is proposed for the S-propargylation of thiols by propargylic carbonates under neutral conditions, in which specific requirements inherent to the different reactivities of aliphatic and aromatic thiols are achieved by tuning both the nature of the ancillary ligand L and the experimental conditions.
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Affiliation(s)
- Teruyuki Kondo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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48
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Werner H, Kukla F, Steinert P. A New Family of Organometallic Rhodium Complexes with [Rh(PiPr2Ph)2] and [Rh(PiPrPh2)2] as Molecular Units. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200206)2002:6<1377::aid-ejic1377>3.0.co;2-d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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50
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Slippage of η3-allenyl/propargyl to an η1 structure and tautomerization of η1-propargyl to η1-allenyl in ligand addition and substitution reactions of platinum(II) complexes. Inorganica Chim Acta 2001. [DOI: 10.1016/s0020-1693(01)00493-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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