Reaction of excess of the organo-ytterbium σ-complex PhYbI with chalcone gives trans-stilbene (1), the C–C bond cleavage product and 1,1,3-triphenylpropene (2) together with diphenylmethanol (3); a possible mechanism of the reaction if proposed.
Z. Hou, N. Mine, Y. Fujiwara and H. Taniguchi, J. Chem. Soc., Chem. Commun., 1985, 1700 DOI: 10.1039/C39850001700
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