An unexpected silver triflate-catalyzed tandem reaction of N'-(2-alkynylbenzylidene)hydrazide with ketene.

Gang Liu, Hongliang Liu, Guanyinsheng Qiu, Shouzhi Pu, Jie Wu

Index: Chem. Commun. (Camb.) 48(56) , 7049-51, (2012)

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Abstract

An unexpected silver triflate-catalyzed tandem reaction of N'-(2-alkynylbenzylidene)hydrazide with ketene through 6-endo-cyclization, [3+2] cycloaddition and rearrangement is reported. This reaction proceeds efficiently to generate the molecular complexity with the formation of four bonds in a one-pot procedure.