Organocatalytic cycloaddition of carbonyl sulfide with propargylic alcohols to 1,3-oxathiolan-2-ones
作者:Hui Zhou、Rui Zhang、Hui Zhang、Sen Mu、Xiao-Bing Lu
DOI:10.1039/c9cy00062c
日期:——
adducts of a Lewis base (LB) were synthesized and first used to catalyze the cycloaddition of COS with propargylic alcohols under mild reaction conditions, selectively providing the functionalized 1,3-oxathiolane-2-ones with complete (Z) configuration selectivity. Among them, COS adducts of highly polarized olefins proved to be highly efficientorganocatalysts for this transformation, with excellent yields