Copper-catalyzed alkynylation of amides with potassium alkynyltrifluoroborates: a room-temperature, base-free synthesis of ynamides

Org Lett. 2010 Jul 16;12(14):3272-5. doi: 10.1021/ol101322k.

Abstract

An efficient copper-mediated method for the coupling of potassium alkynyltrifluoroborates with nitrogen nucleophiles is reported. This reaction provides the first base-free and room-temperature synthesis of ynamides and allows for an easy preparation of these useful building blocks.