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Tobrman T, Krupička M, Polák P, Dvořáková H, Čubiňák M, Babor M, Dvořák D. Diastereoselective Cyclopropanation through Michael Addition-Initiated Ring Closure between α,α-Dibromoketones and α,β-Unsaturated Fischer Carbene Complexes. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tomáš Tobrman
- Department of Organic Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Martin Krupička
- Department of Organic Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Peter Polák
- Department of Organic Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Hana Dvořáková
- Laboratory of NMR Spectroscopy; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Marek Čubiňák
- Department of Organic Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Martin Babor
- Department of Solid State Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
| | - Dalimil Dvořák
- Department of Organic Chemistry; University of Chemistry and Technology; Technická 5, Prague 6 166 28 Prague Czech Republic
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Barluenga J, Aguilar E. Group 6 Metal Fischer Carbene Complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kim SH, Lim JW, Lim CH, Kim JN. Facile Regiocontrolled Three-Step Synthesis of Poly-Substituted Furans, Pyrroles, and Thiophenes: Consecutive Michael Addition of Methyl Cyanoacetate to α,β-Enone, CuI-Mediated Aerobic Oxidation, and Acid-Catalyzed Paal-Knorr Synthesis. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.2.620] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ramírez-López P, Sierra MA, Gómez-Gallego M, Mancheño MJ, Gornitzka H. New Reactivity Modes of Chromium(0) Fischer Carbene Complexes: Unprecedented Insertion of a Carbene Ligand into an Active B−H Bond. Organometallics 2003. [DOI: 10.1021/om034010v] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pedro Ramírez-López
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Laboratoire d'Hétérochimie Fondamentale et Appliquée du CNRS (UMR 5069), Bâtiment 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - Miguel A. Sierra
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Laboratoire d'Hétérochimie Fondamentale et Appliquée du CNRS (UMR 5069), Bâtiment 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - Mar Gómez-Gallego
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Laboratoire d'Hétérochimie Fondamentale et Appliquée du CNRS (UMR 5069), Bâtiment 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - María José Mancheño
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Laboratoire d'Hétérochimie Fondamentale et Appliquée du CNRS (UMR 5069), Bâtiment 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
| | - Heinz Gornitzka
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain, and Laboratoire d'Hétérochimie Fondamentale et Appliquée du CNRS (UMR 5069), Bâtiment 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 04, France
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Ramírez-López P, Gómez-Gallego M, Mancheño MJ, Sierra MA, Bilurbina M, Ricart S. Reduction of cyclic group 6 Fischer carbene complexes: a case of exquisite regioselectivity. J Org Chem 2003; 68:3538-45. [PMID: 12713357 DOI: 10.1021/jo0267347] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reduction of alpha,beta-unsaturated cyclic group 6 metal-carbene complexes strongly depends on the electronic profile of the groups attached both to the carbene and the beta-carbon and occurs with exquisite regioselectivity. Thus, for complexes 8 the reduction does not take place at the carbene carbon but exclusively at the gamma-carbonyl group. The resulting alkoxide 20 evolves to a tricyclic epoxide structure 21, which precludes additional hydride transfers. Complex 9 experiences the exclusive 1,4-reduction because of the imino character of the beta-carbon (due to the participation of the aromatic resonance form 22). In contrast, monocyclic carbene complexes 10 behave as their acyclic congeners and experience 1,2-hydride addition followed by the 1,3-migration of the metal center. In this case, the participation of eta(3)-Cr(CO)(5) species 31 allows us to understand the labeling pattern found in the final products.
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Affiliation(s)
- Pedro Ramírez-López
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040-Madrid, Spain
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Affiliation(s)
- John E Baldwin
- Department of Chemistry, Syracuse University, Syracuse, New York 13203, USA
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Robin-Le Guen F, Le Poul P, Caro B, Pichon R, Kervarec N. Synthesis of electron donor–acceptor polyunsaturated methylenepyran Fischer type carbene complexes: dynamic 1H-NMR study and solvatochromic properties. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00940-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wessig P, Mühling O. A New Photochemical Route to Cyclopropanes We gratefully thank the Deutsche Forschungsgemeinschaft for financial support (grant no.: We 1850/3-1). Angew Chem Int Ed Engl 2001; 40:1064-1065. [PMID: 11268074 DOI: 10.1002/1521-3773(20010316)40:6<1064::aid-anie10640>3.0.co;2-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pablo Wessig
- Institut für Chemie Humboldt-Universität zu Berlin Hessische Strasse 1-2, 10115 Berlin (Germany)
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Caro B, Le Poul P, Robin-Le Guen F, Sénéchal-Tocquer MC, Saillard JY, Kahlal S, Ouahab L, Golhen S. 1,2 and 1,6 Additions of Lithium Reagents to γ-Methylenepyran Fischer-Type Carbene Complexes; Evolution of the 1,2 and 1,6 Adducts to Unsaturated Carbene Complexes Indirectly Stabilized by a Heteroatom, and to Pyranylidene Carbene Complexes. European J Org Chem 2000. [DOI: 10.1002/(sici)1099-0690(200002)2000:4<577::aid-ejoc577>3.0.co;2-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gabriele B, Salerno G, De Pascali F, Costa M, Chiusoli GP. An Efficient and General Synthesis of Furan-2-acetic Esters by Palladium-Catalyzed Oxidative Carbonylation of (Z)-2-En-4-yn-1-ols. J Org Chem 1999. [DOI: 10.1021/jo990848+] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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