Science of Synthesis

Gandon, V.; Thorimbert, S.; Malacria, M., Science of Synthesis, (2009) 46, 180.

Dimerization of propargyl alcohols ‌25‌ to give dienones ‌26‌ occurs in the presence of a cationic ruthenium complex (‌Scheme 10‌).[‌33‌] Although tertiary propargyl alcohols are required as the substrates, a broad range of functionality can be tolerated, but with unsymmetrical propargyl alcohols mixtures of E- and Z-isomers are obtained.

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References