A Route to α-Fluoroalkyl Sulfides from α-Fluorodiaroylmethanes
作者:Ya-mei Lin、Wen-bin Yi、Wan-zhao Shen、Guo-ping Lu
DOI:10.1021/acs.orglett.5b03654
日期:2016.2.5
alpha,alpha-Difluorodiaroylmethane can be used as a nucleophilic difluoromethylation reagent for generating alpha-thioaryl-alpha,alpha-difluoroacetophenones ((ArCOCF2SAr)-C-1) and difluoromethylthiolated arenes (ArSCF2H) under transition-metal-free conditions. The reaction selectivity is mainly dependent on temperature. The method has also been extended to the synthesis of alpha-thioaryl-alpha-monofluoroacetophenones using alpha-monofluorodibenzoylmethane. Moreover, the benzoyl cation derived from alpha,alpha-difluorodibenzoylmethane can react with nucleophiles to afford the desired products in a one-pot process.
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