Palladium-catalyzed carbonylative Sonogashira coupling of aryl diazonium salts with formic acid as the CO source: the effect of 1,3-butadiene

Abstract

An efficient carbonylative cross-coupling of aryl diazonium salts with terminal alkynes using formic acid as the CO source has been developed. Various useful alkynones were produced in moderate to good yields. Notably, 1,3-butadiene was found to play a crucial role in this transformation.