Introduction. – Among several protocols for the synthesis of ynones [1–3], the reaction of acyl chlorides with alkynyl organometallic reagents, based on copper [4], zinc [5], tin [6], silver [7], lithium [8], and silicon [9], is arguably one of the most versatile and efficient methods. Recently, the coupling reaction of terminal alkynes and acyl chlorides catalyzed by Pd catalysts has received much attention [10]; but, on the other hand, efficient Pd-free systems would ...
[Morales-Serna, Jose Antonio; Sauza, Alejandro; Padron De Jesus, Gabriela; Gavino, Ruben; Garcia De La Mora, Gustavo; Cardenas, Jorge Tetrahedron Letters, 2013 , vol. 54, # 52 p. 7111 - 7114]
