Volume 59, Issue 12 pp. 4846-4850
Communication

Enantioselective Radical-Polar Crossover Reactions of Indanonecarboxamides with Alkenes

Xiying Zhang

Xiying Zhang

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Wangbin Wu

Wangbin Wu

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Weidi Cao

Weidi Cao

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Han Yu

Han Yu

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Xi Xu

Xi Xu

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Prof. Dr. Xiaohua Liu

Corresponding Author

Prof. Dr. Xiaohua Liu

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
Prof. Dr. Xiaoming Feng

Corresponding Author

Prof. Dr. Xiaoming Feng

Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064 China

Search for more papers by this author
First published: 12 January 2020
Citations: 28

Graphical Abstract

Crossing over: A highly efficient asymmetric radical-polar crossover reaction of indanonecarboxamides/esters and various electron-rich alkenes was realized by combining a chiral N,N′-dioxide/NiII complex catalyst with Ag2O. Five types of products could be obtained with good to excellent yields and ee values.

Abstract

Highly efficient asymmetric intermolecular radical-polar crossover reactions were realized by combining a chiral N,N′-dioxide/NiII complex catalyst with Ag2O under mild reaction conditions. Various terminal alkenes and indanonecarboxamides/esters underwent radical addition/cyclization reactions to afford spiro-iminolactones and spirolactones with good to excellent yields (up to 99 %) and enantioselectivities (up to 97 % ee). Furthermore, a range of different radical-mediated oxidation/elimination or epoxide ring-opening products were obtained under mild reaction conditions. The Lewis acid catalysts exhibited excellent performance and precluded the strong background reaction.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.