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Journal of the American Chemical Society

An organocatalytic asymmetric chlorolactonization.


PMID 20170118

Abstract

A reagent controlled organocatalytic enantioselective chlorolactonization reaction has been developed. Several 4-aryl pentenoic acids were cyclized in the presence of 0.1 equiv of (DHQD)(2)PHAL, employing various N-chlorinated hydantoins as the terminal chlorenium source. Ten examples are presented with selectivities ranging from 43 to 90% ee. This work represents the first example of an enantioselective reagent-controlled chlorolactonization that approaches synthetically useful enantioselectivities.

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