Direct C(sp3)-H Sulfonylation of Xanthene Derivatives with Sodium Sulfinates by Oxidative Copper Catalysis

摘要

Comprehensive Summary By employing a readily available CuCl/DDQ catalyst system, we herein report a direct C(sp(3))-H sulfonylation of xanthene derivates with odorless sodium sulfinates. Various 9H-xanthenes, thioxanthenes, and 9,10-dihydroacridines are efficiently transformed into the desired benzylic sulfonyl products via a radical/radical cross-coupling process, proceeding with the merits of broad substrate scope, operational simplicity, good functional group compatibility, and mild reaction conditions.

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