Palladium-Catalyzed Decarbonylative Alkynylation of Amides.

A palladium-catalyzed decarbonylative alkynylation of amides via C-N bond activation is developed. Compared with the reported Ni/Cu catalyzed reaction, which only proceeded well with silylacetylenes, this transformation was also applicable to both aromatic and aliphatic terminal alkynes, including those bearing functional groups, and thus provided a general and straightforward access to diverse internal alkynes.