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Zhu Y, Li Y, Meng Q, Li X. An organocatalytic enantioselective vinylogous Mannich reaction of α,α-dicyanoolefins with isatin N-Boc ketimines. Org Chem Front 2016. [DOI: 10.1039/c6qo00038j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The first catalytic enantioselective vinylogous Mannich reaction of α,α-dicyanoolefins with ketimines derived from isatins has been developed. High yields and enantioselectivities were observed for the reaction of various ketimines and α,α-dicyanoolefins using a tertiary butyl substituted cinchona alkaloid type squaramide catalyst.
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Affiliation(s)
- Yi Zhu
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
| | - Yao Li
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures
- Beijing Institute of Pharmacology and Toxicology
- Beijing
- China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Department of Chemistry
- Nankai University
- Tianjin 300071
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Stang EM, White MC. Molecular complexity via C-H activation: a dehydrogenative Diels-Alder reaction. J Am Chem Soc 2011; 133:14892-5. [PMID: 21842902 PMCID: PMC3292869 DOI: 10.1021/ja2059704] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Traditionally, C-H oxidation reactions install oxidized functionality onto a preformed molecular skeleton, resulting in a local molecular change. The use of C-H activation chemistry to construct complex molecular scaffolds is a new area with tremendous potential in synthesis. We report a Pd(II)/bis-sulfoxide-catalyzed dehydrogenative Diels-Alder reaction that converts simple terminal olefins into complex cycloadducts in a single operation.
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Affiliation(s)
- Erik M Stang
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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3
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Ting A, Schaus SE. Organocatalytic Asymmetric Mannich Reactions: New Methodology, Catalyst Design, and Synthetic Applications. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700409] [Citation(s) in RCA: 413] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amal Ting
- Department of Chemistry, Boston University, Life Science and Engineering Building, 24 Cummington Street, Boston, MA 02215, U. S. A., Fax: +1‐617‐353‐6466
| | - Scott E. Schaus
- Department of Chemistry, Boston University, Life Science and Engineering Building, 24 Cummington Street, Boston, MA 02215, U. S. A., Fax: +1‐617‐353‐6466
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Diedrich MK, Klärner FG, Beno BR, Houk KN, Senderowitz H, Still WC. Experimental Determination of the Activation Parameters and Stereoselectivities of the Intramolecular Diels−Alder Reactions of 1,3,8-Nonatriene, 1,3,9-Decatriene, and 1,3,10-Undecatriene and Transition State Modeling with the Monte Carlo-Jumping Between Wells/Molecular Dynamics Method. J Am Chem Soc 1997. [DOI: 10.1021/ja9643331] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthias K. Diedrich
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
| | - Frank-Gerrit Klärner
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
| | - Brett R. Beno
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
| | - K. N. Houk
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
| | - Hanoch Senderowitz
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
| | - W. Clark Still
- Contribution from the Institut für Organische Chemie, Universität GH Essen, D-45117 Essen, Germany, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, and Department of Chemistry, Columbia University, New York, New York 10027
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