Interest in α, β-acetylenic ketones is mainly due to the fact that the conjugated system of a triple bond and a carbonyl group is present in many natural compounds having biochemical activity [1]. α, β-Acetylenic ketones are often used for the synthesis [1, 2] and functionalization [3, 4] of various aromatic and heterocyclic compounds. Thus, a recently found palladium-free cross coupling of α, β-acetylenic ketones with pyrroles and indoles ...
