Rearrangement of Alkynyl Sulfoxides Catalyzed by Gold(I) Complexes
作者:Nathan D. Shapiro、F. Dean Toste
DOI:10.1021/ja070789e
日期:2007.4.1
A series of gold(I)-catalyzed rearrangement reactions of alkynyl sulfoxides are reported. Homopropargylsulfoxides are rearranged to benzothiepinones or benzothiopines, while α-thioenones are formed in the reaction of propargylsulfoxides. The proposed mechanism proceeds via an α-carbonyl gold−carbenoid intermediate formed through gold-promoted oxygen atom transfer from the sulfoxide to the alkyne.