Iodine was added to 3-(trimethylsilyl )allylic phosphonium ylide regiospecifically to give 3-iodo-3-trimethylsilyl allylic phosphonium ylide, which reacted with carbonyl compounds to give 1-iodo-1-trimethylsilyl 1,3-dienes with high stereoselectivity in good yield.
Y. Shen, T. Wang and W. Xia, J. Chem. Soc., Perkin Trans. 1, 1993, 389 DOI: 10.1039/P19930000389
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