Synlett 2019; 30(09): 1067-1072
DOI: 10.1055/s-0037-1611782
letter
© Georg Thieme Verlag Stuttgart · New York

Enantioselective Arylation of 3-Carboxamide Oxindoles with Quinone Monoimines and Synthesis of Chiral Spirooxindole-benzofuranones

Hui Chen
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
b   University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China
,
Hui Liu
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
b   University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China
,
Si-Han Zhao
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
b   University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China
,
Shao-Bing Cheng
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
b   University of Chinese Academy of Sciences, Beijing, 100049, P. R. of China
,
Xiao-Ying Xu
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
,
Wei-Cheng Yuan
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
,
a   Key Laboratory for Asymmetric Synthesis & Chirotechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. of China   Email: xmzhang@cioc.ac.cn
› Author Affiliations
We are grateful for financial support from the National Natural Science Foundation of China (21672208).
Further Information

Publication History

Received: 08 February 2019

Accepted after revision: 17 March 2019

Publication Date:
02 April 2019 (online)


Abstract

A highly enantioselective arylation of 3-carboxamide oxoindoles with quinone monoimines is described. Various 3-aryl-3-carboxamide oxindoles with an all-carbon quaternary center were obtained in moderate to good yields (up to 99%) with moderate to good enantioselectivities (up to 98%) in the presence of a bifunctional thiourea-tertiary amine catalyst. The absolute configuration of one product was determined by an X-ray crystal structural analysis and the absolute configurations of the other products can be assigned by analogy. Moreover, several chiral spirooxindole-benzofuranones were synthesized from the 3-aryl-3-carboxamide oxindoles in moderate yields with moderate to good enantioselectivities.

Supporting Information