Photoredox-Catalyzed Hydrosulfonylation of Arylallenes

J Org Chem. 2020 Feb 21;85(4):2250-2259. doi: 10.1021/acs.joc.9b02960. Epub 2020 Jan 6.

Abstract

(Het)Arylallenes undergo hydrosulfonylation under photoredox-catalyzed conditions. The reaction gives vinyl sulfones in a regio- and diastereoselective manner, employing sodium sulfinates as the sulfonyl source and eosin Y as the photocatalyst. Indol-1-yl, pyrrol-1-yl, phenyl, and naphtylallenes might be used. Aliphatic allenes are incompatible with the reaction conditions.