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Kirchhof M, Gugeler K, Fischer FR, Nowakowski M, Bauer A, Alvarez-Barcia S, Abitaev K, Schnierle M, Qawasmi Y, Frey W, Baro A, Estes DP, Sottmann T, Ringenberg MR, Plietker B, Bauer M, Kästner J, Laschat S. Experimental and Theoretical Study on the Role of Monomeric vs Dimeric Rhodium Oxazolidinone Norbornadiene Complexes in Catalytic Asymmetric 1,2- and 1,4-Additions. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Manuel Kirchhof
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Katrin Gugeler
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Felix Richard Fischer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Michal Nowakowski
- Department Chemie und Center for Sustainable Systems Design (CSSD), Universität Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
| | - Alina Bauer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Sonia Alvarez-Barcia
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Karina Abitaev
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Marc Schnierle
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Yaseen Qawasmi
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Angelika Baro
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Deven P. Estes
- Institut für Technische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Thomas Sottmann
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Mark R. Ringenberg
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Bernd Plietker
- Technische Universität Dresden, Professur für Organische Chemie I, Bergstraße 66, D-01069 Dresden, Germany
| | - Matthias Bauer
- Department Chemie und Center for Sustainable Systems Design (CSSD), Universität Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany
| | - Johannes Kästner
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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2
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Guo S, Jie K, Zhang Z, Fu Z, Cai H. Regioselective C3-Phosphonation of Free Indoles via Transition-Metal-Free Radical/Hydrolysis Cascade. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801889] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Shengmei Guo
- Department of Chemistry; Nanchang University; Xuefu Rd. 999 330031 Nanchang P. R. China
| | - Kun Jie
- Department of Chemistry; Nanchang University; Xuefu Rd. 999 330031 Nanchang P. R. China
| | - Zhebin Zhang
- Department of Chemistry; Nanchang University; Xuefu Rd. 999 330031 Nanchang P. R. China
| | - Zhengjiang Fu
- Department of Chemistry; Nanchang University; Xuefu Rd. 999 330031 Nanchang P. R. China
| | - Hu Cai
- Department of Chemistry; Nanchang University; Xuefu Rd. 999 330031 Nanchang P. R. China
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Wegmann M, Henkel M, Bach T. C-H alkylation reactions of indoles mediated by Pd(ii) and norbornene: applications and recent developments. Org Biomol Chem 2018; 16:5376-5385. [PMID: 29993084 DOI: 10.1039/c8ob01025k] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Catellani reaction enables an ortho-C-H activation based on oxidative addition of Pd(0) and an intermediary carbopalladation of norbornene. Among its variants, the recently developed C2-selective alkylation of indoles is particular as it employs Pd(ii) as the source of palladium. This review describes the mechanistic background of this transformation. Applications in total synthesis and in the synthesis of biologically relevant molecules are illustrated and further developments of the method are discussed.
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Affiliation(s)
- Marcus Wegmann
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany.
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Mühlhäuser T, Savin A, Frey W, Baro A, Schneider AJ, Döteberg HG, Bauer F, Köhn A, Laschat S. Role of Regioisomeric Bicyclo[3.3.0]octa-2,5-diene Ligands in Rh Catalysis: Synthesis, Structural Analysis, Theoretical Study, and Application in Asymmetric 1,2- and 1,4-Additions. J Org Chem 2017; 82:13468-13480. [DOI: 10.1021/acs.joc.7b02601] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tina Mühlhäuser
- Institut
für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Alex Savin
- Institut
für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut
für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Angelika Baro
- Institut
für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Andreas J. Schneider
- Kekulé-Institut
für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
| | - Heinz-Günter Döteberg
- HD Separation
GmbH, Industriepark Niederau, Kreuzauer Strasse 46, 52355 Düren, Germany
| | - Florian Bauer
- Institut
für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Andreas Köhn
- Institut
für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
| | - Sabine Laschat
- Institut
für Organische Chemie, Universität Stuttgart, Pfaffenwaldring
55, 70569 Stuttgart, Germany
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Orlandi M, Hilton MJ, Yamamoto E, Toste FD, Sigman MS. Mechanistic Investigations of the Pd(0)-Catalyzed Enantioselective 1,1-Diarylation of Benzyl Acrylates. J Am Chem Soc 2017; 139:12688-12695. [PMID: 28800230 PMCID: PMC5649438 DOI: 10.1021/jacs.7b06917] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A mechanistic study of the Pd-catalyzed enantioselective 1,1-diarylation of benzyl acrylates that is facilitated by a chiral anion phase transfer (CAPT) process is presented. Kinetic analysis, labeling, competition, and nonlinear effect experiments confirm the hypothesized general mechanism and reveal the role of the phosphate counterion in the CAPT catalysis. The phosphate was found to be involved in the phase transfer step and in the stereoinduction process, as expected, but also in the unproductive reaction that provides the traditional Heck byproduct. Multivariate correlations revealed the CAPT catalyst's structural features, affecting the production of this undesired byproduct, as well as weak interactions responsible for enantioselectivity. Such putative interactions include π-stacking and a CH···O electrostatic attraction between the substrate benzyl moiety and the phosphate. Analysis of the computed density functional theory transition structures for the stereodetermining step of the reaction supports the multivariate model obtained. The presented work provides the first comprehensive study of the combined use of CAPT and transition metal catalysis, setting the foundation for future applications.
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Affiliation(s)
- Manuel Orlandi
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, USA
| | - Margaret J. Hilton
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, USA
| | - Eiji Yamamoto
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, USA
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Matthew S. Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, USA
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