E-α-Arylidene-γ-butyrolactones were prepared by the radical addition–elimination reaction of Z-α-stannylmethylene-γ-butyrolactones, whereas the palladium(0) catalysed cross-coupling reaction of the same substrates afforded Z-α-arylidene-γ-butyrolactones.
E. Lee, C. U. Hur, Y. C. Jeong, Y. H. Rhee and M. H. Chang, J. Chem. Soc., Chem. Commun., 1991, 1314 DOI: 10.1039/C39910001314
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