Phosphonium and arsonium ylides(?)——ⅩⅦ.A facile synthesis of methyl 2,6-bisperfluoroalkylbenzoates via acyclic precursors

(整期优先)网络出版时间:1993-01-11
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Thetitlecompounds6a—6fwerepreparedwithhighyieldviaintramolecularWittigreactionofmethyl3-perfluoroalkyl-6-perfluoroacyl-2-triphenylphosphoranylidenehex-3,5-dienoates(5a—5i)whichwereobtainedfromthereacitonof3-perfluoroacylprop-2-enylidenetriphenylphos-phoranes(3a—3c)withmethylperfluoroalkynoates(4a—4c).