"Head-to-head" dimerization and dehydrodimerization of vinyl ketones catalyzed by modified rhodium(I) complexes

Article abstract of DOI:10.1016/0022-328X(91)86452-V

The dimerization of vinyl ketones RC(O)CH=CH2, I (R = Me, ^tBu, Ph, p-MeC6H4, cyclopropyl, 2-(5-methylfuryl)) at 80 deg C in the presence of the catalytic system 2-MCl2 leads preferably to either α,β-unsaturated 1,6-diketones RC(O)C