Jacques Le Paih, Sylvie Dérien and Pierre H. Dixneuf
The precatalyst RuCl(cod)C5Me5 allows the head-to-head oxidative dimerization of terminal alkynes and the concommittent 1,4-addition of carboxylic acid to afford (1E,3E)-1-acyloxy-1,3-dienes in one step under mild conditions.