Abstract
AbstractIron‐mediated radical cyanoalkylsulfonylation/arylation of active olefins with cycloketone oxime derivatives via cleavage of C−C single bond and insertion of SO2 is developed for the preparation of cyanoalkylsulfonylated oxindoles. This difunctionalization of carbon−carbon double bond via a radical pathway involves cyclobutanone oxime ester fragmentation, sulfonyl radical generation and radical addition/5‐exo cyclization. The methodology displays good functional group tolerance and does not require any external bases or oxidants.magnified image
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