Abstract
AbstractAn unprecedented asymmetric desymmetrization of meso‐epoxides, derived from cyclopentene‐1,3‐diones, with 2‐mercaptobenzothiazoles has been realized. It was efficiently catalyzed by a chiral DyIII/N,N′‐dioxide complex through a thiolysis/elimination sequence. This remote stereocontrol strategy provides facile access to synthetically versatile cyclopentene derivatives bearing an all‐carbon quaternary stereogenic center in high yield and excellent enantioselectivity. Intriguingly, optically active thiophene could be readily generated from the obtained product through an efficient one‐pot protocol.
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