Synlett 2022; 33(16): 1575-1581
DOI: 10.1055/a-1840-5199
synpacts

Visible-Light-Induced Organocatalyzed [2+1] Cyclization of Alkynes and (Trifluoroacetyl)silanes

Gang Zhou
,
Xiao Shen
We are grateful to NSFC (21901191), Fundamental Research Funds for the Central Universities, and Wuhan University for financial support.


Abstract

The synthesis of common cyclopropenes has been widely studied, but the synthesis of cyclopropenols is a significant challenge. Here, we highlight our recent work on the synthesis of trifluoromethylated cyclopropenols through a [2+1] cycloaddition reaction between alkynes and (trifluoroacetyl)silanes under visible-light-induced organocatalysis. The novel amphiphilic donor–acceptor carbenes derived from (trifluoroacetyl)silanes can react effectively with both activated and nonactivated alkynes. A broad substrate scope and a good functional-group tolerance have been achieved. Moreover, the synthetic potential of this reaction was highlighted by a gram-scale reaction and the one-pot diastereoselective synthesis of trifluoromethylated cyclopropanols.



Publication History

Received: 29 March 2022

Accepted after revision: 01 May 2022

Accepted Manuscript online:
01 May 2022

Article published online:
07 June 2022

© 2022. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany