期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 51, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202213407
关键词
Heterocycles; Multicomponent Reactions; Palladium; Reaction Mechanisms; Synthetic Methods
资金
- National Natural Science Foundation of China [22001268, 21973113, 81973176]
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery [2019B030301005]
- Program for Guangdong Introducing Innovative and Entrepreneurial Teams [2016ZT06Y337]
- Guangdong Natural Science Fund [2020A1515010614]
Chiral oxindoles are important chemical structures found in many natural products. While there are well-developed methods for constructing C3 quaternary oxindoles with high selectivity, the efficient synthesis of chiral 3-substituted tertiary oxindoles is rarely reported. In this study, a multicomponent assembly method for complex oxindoles through enantioselective cooperative catalysis is presented.
Chiral oxindoles are important chemical scaffolds found in many natural products, and their enantioselective synthesis thus attracts considerable attention. Highly diastereo- and enantioselective synthetic methods for constructing C3 quaternary oxindoles have been well-developed. However, the efficient synthesis of chiral 3-substituted tertiary oxindoles has been rarely reported due to the ease of racemization of the tertiary stereocenter via enolization. Therefore, we herein report on the multicomponent assembly (from N-aryl diazoamides, aldehydes, and enamines/indoles) of complex oxindoles by enantioselective cooperative catalysis. These reactions proceed under mild conditions and show broad substrate scope, affording the desired coupling products (>90 examples) with good to excellent stereocontrol. Additionally, this research also demonstrates the synthetic potential of this annulation by constructing the 6,6,5-tricyclic lactone core structure of Speradine A.
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