Volume 63, Issue 1 e202315092
Communication

Enantioselective Palladium(II)-Catalyzed Desymmetrizative Coupling of 7-Azabenzonorbornadienes with Alkynylanilines

Junjie Meng

Junjie Meng

National Key Laboratory of Green Pesticide, College of Materials and Energy, South China Agricultural University, Guangzhou, 510641 Guangdong, China

These authors contributed equally to this work

] co-first authors

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Hui He

Hui He

Department of Chemistry, Shantou University, Shantou, 515063 Guangdong, China

These authors contributed equally to this work

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Qianru Liu

Qianru Liu

National Key Laboratory of Green Pesticide, College of Materials and Energy, South China Agricultural University, Guangzhou, 510641 Guangdong, China

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Prof. Hanhong Xu

Prof. Hanhong Xu

National Key Laboratory of Green Pesticide, College of Materials and Energy, South China Agricultural University, Guangzhou, 510641 Guangdong, China

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Prof. Dr. Huicai Huang

Corresponding Author

Prof. Dr. Huicai Huang

Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510641 Guangdong, China

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Prof. Dr. Shao-Fei Ni

Corresponding Author

Prof. Dr. Shao-Fei Ni

Department of Chemistry, Shantou University, Shantou, 515063 Guangdong, China

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Prof. Dr. Zhaodong Li

Corresponding Author

Prof. Dr. Zhaodong Li

National Key Laboratory of Green Pesticide, College of Materials and Energy, South China Agricultural University, Guangzhou, 510641 Guangdong, China

National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023 Jiangsu, China

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In memory of Professor Xiyan Lu
First published: 09 November 2023
Citations: 11

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Graphical Abstract

A palladium-catalyzed enantioselective desymmetrizative coupling of prochiral 7-azabenzonorbornadienes with readily available alkynylanilines afforded dihydronaphthalenes via concomitant generation of three covalent bonds. The methods also allows to build two stereocenters and an indole motif in a highly diastereo- and enantioselective as well as atom-economic manner.

Abstract

A PdII-catalyzed, domino enantioselective desymmetrizative coupling of 7-azabenzonorbornadienes with alkynylanilines is disclosed herein. This operationally simple transformation generates three covalent bonds and two contiguous stereocenters with excellent enantio- and diastereo-selectivity. The resulting functionalized indole-dihydronaphthalene-amine conjugates served as an appealing platform to streamline the diversity-oriented synthesis (DOS) of other valuable enantioenriched compounds. DFT calculations revealed that the two stabilizing non-covalent interactions contributed to the observed enantioselectivity.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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