Conjugated bisperfluoroalkyl enynes can be conveniently synthesized in 85–99% yield by vacuum pyrolysis of {[α-(perfluoroalkyl)vinyl](perfluoroacyl)methylene}triphenylphosphoranes which were generated from the corresponding methylene triphenylphosphoranes via double perfluoroacylation in a one-pot reaction.
Y. Shen, Y. Xiang and W. Qiu, J. Chem. Soc., Perkin Trans. 1, 1991, 2965 DOI: 10.1039/P19910002965
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