A copper(I)–phosphine complex has been found to facilely promote the distannylation of alkynes with the aid of a base, where a catalytically generated Cu–Sn species serves as a key intermediate. The broad versatility of the copper catalysis has been demonstrated by the facile distannylation of unfunctionalized aliphatic alkynes, being hardly achievable with the conventional palladium catalysts.
H. Yoshida, A. Shinke and K. Takaki, Chem. Commun., 2013, 49, 11671 DOI: 10.1039/C3CC47173J
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