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Erb J, Paull DH, Dudding T, Belding L, Lectka T. From bifunctional to trifunctional (tricomponent nucleophile-transition metal-lewis acid) catalysis: the catalytic, enantioselective α-fluorination of acid chlorides. J Am Chem Soc 2011; 133:7536-46. [PMID: 21513338 PMCID: PMC3432319 DOI: 10.1021/ja2014345] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report in full detail our studies on the catalytic, asymmetric α-fluorination of acid chlorides, a practical method that produces an array of α-fluorocarboxylic acid derivatives in which improved yield and virtually complete enantioselectivity are controlled through electrophilic fluorination of a ketene enolate intermediate. We discovered, for the first time, that a third catalyst, a Lewis acidic lithium salt, could be introduced into a dually activated system to amplify yields of aliphatic products, primarily through activation of the fluorinating agent. Through our mechanistic studies (based on kinetic data, isotopic labeling, spectroscopic measurements, and theoretical calculations) we were able to utilize our understanding of this "trifunctional" reaction to optimize the conditions and obtain new products in good yield and excellent enantioselectivity.
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Affiliation(s)
- Jeremy Erb
- Department of Chemistry, New Chemistry Building, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218
| | - Daniel H. Paull
- Department of Chemistry, New Chemistry Building, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218
| | - Travis Dudding
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
| | - Lee Belding
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
| | - Thomas Lectka
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
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Bejan D, Willner H, Ignatiev N, Lehmann CW. Synthesis and Characterization of Bis[bis(pentafluoroethyl)phosphinyl]imides, M+N[(C2F5)2P(O)]2−, M = H, Na, K, Cs, Ag, Me4N. Inorg Chem 2008; 47:9085-9. [DOI: 10.1021/ic801088q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dana Bejan
- Bergische Universität Wuppertal, FB C — Anorganische Chemie, Gauss Strasse 20, D-42097 Wuppertal, Germany, Merck KGaA Company, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Helge Willner
- Bergische Universität Wuppertal, FB C — Anorganische Chemie, Gauss Strasse 20, D-42097 Wuppertal, Germany, Merck KGaA Company, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Nikolai Ignatiev
- Bergische Universität Wuppertal, FB C — Anorganische Chemie, Gauss Strasse 20, D-42097 Wuppertal, Germany, Merck KGaA Company, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Christian W. Lehmann
- Bergische Universität Wuppertal, FB C — Anorganische Chemie, Gauss Strasse 20, D-42097 Wuppertal, Germany, Merck KGaA Company, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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Thomas BH, Shafer G, Ma JJ, Tu MH, DesMarteau DD. Synthesis of 3,6-dioxa-Δ7-4-trifluoromethyl perfluorooctyl trifluoromethyl sulfonimide: bis[(perfluoroalkyl)sulfonyl] superacid monomer and polymer. J Fluor Chem 2004. [DOI: 10.1016/j.jfluchem.2004.05.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhang J, DesMarteau DD, Zuberi S, Ma JJ, Xue L, Gillette SM, Blau H, Gerhardt R. Synthesis of the first difunctional N-fluoro perfluoroalkylsulfonylimides, CF3SO2NFSO2(CF2)nSO2NFSO2CF3. J Fluor Chem 2002. [DOI: 10.1016/s0022-1139(02)00121-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Xue L, Desmarteau DD, Pennington WT. Gestaffelte und verdrillte Difluormethylengruppen in Perfluoralkylketten - die Struktur von M[C4F9SO2NSO2C4F9] (M = Na, K). Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971091227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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