First synthesis of alkynyltriphenylbismuthonium salts and their dual reaction modes in sulfonylation
Abstract
Treatment of triphenylbismuth difluoride with alkynyldiisopropoxyboranes in the presence of BF3·OEt2 in CH2Cl2 gives alkynyltriphenylbismuthonium tetrafluoroborates, which react with sodium p-toluenesulfinate in dual reaction modes depending on the solvents employed.