A novel protocol for palladium-catalyzed fluoroarylation of 1,1-difluoroallenes was described here. The reaction proceeded smoothly under mild condition and various trifluoromethylated alkenes were obtained in moderate yields with excellent E selectivity. The mechanism involving a vital trifluoromethylated vinyl silver intermediate, which generated through the F-nucleophilic addition to 1,1-difluoroallenes, has been proposed.

中文翻译：

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钯催化的1,1-二氟氟丙二烯的立体选择性氟芳基化

此处描述了钯催化1,1-二氟丙二烯的氟芳基化的新方案。反应在温和条件下顺利进行，并以中等收率获得了各种三氟甲基化烯烃，并具有出色的E选择性。已经提出了涉及重要的三氟甲基化乙烯基银中间体的机理，该中间体是通过F-亲核加成到1,1-二氟丙二烯中而生成的。