Synthesis 2015; 47(17): 2538-2544
DOI: 10.1055/s-0034-1378716
special topic
© Georg Thieme Verlag Stuttgart · New York

Tertiary-Amine-Catalyzed Asymmetric [3+2] Annulations of Morita–Baylis–Hillman Carbonates of Isatins with Nitroolefins to Construct Spirooxindoles

Jing Peng
Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. of China   Email: ycchen@scu.edu.cn
,
Guang-Yao Ran
Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. of China   Email: ycchen@scu.edu.cn
,
Wei Du
Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. of China   Email: ycchen@scu.edu.cn
,
Ying-Chun Chen*
Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. of China   Email: ycchen@scu.edu.cn
› Author Affiliations
Further Information

Publication History

Received: 20 March 2015

Accepted after revision: 01 May 2015

Publication Date:
25 June 2015 (online)


Abstract

An enantioselective [3+2] annulation of nitroolefins with racemic Morita–Baylis–Hillman carbonates of isatins catalyzed by α-isocupreine has been developed. Chiral spirocyclic 2-oxindoles bearing an unusual cyclopentadiene motif were produced in excellent enantioselectivity (up to 98% ee) after the tandem elimination of HNO2 in the presence of DIPEA.

Supporting Information