A One-Pot Method for the Synthesis of Phenylalkynyl-Substituted Terminal Alkynes by Deprotection/Stannylation followed by a Migita–Kosugi–Stille coupling

Abstract

A practical one-pot approach for the synthesis of arylalkynyl-substituted terminal alkynes has been developed through a deprotection/ stannylation of a phenylethynyl phosphine oxide followed by Migita–Kosugi–Stille coupling, avoiding the longer synthetic route involving repeated deprotection/Sonogashira coupling. Other features of this approach include mild reaction conditions, excellent yields, facile isolation of products and wide functional group tolerance.