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Functional Phosphonium Salts

Two standard routes to y-functional phosphonium salts with electron-withdrawing groups consist in using the corresponding Michael alkenes to achieve either halide substitution in the -position to the functional group, in order to obtain y-functional vinylphosphonium salts, or Michael addition in the presence of acid to produce the y-functional alkylphosphonium salt (reaction 85). [Pg.87]

A number of other diaurated ylide derivatives have been obtained from the interaction of functionalized phosphonium salts such as [Ph3PCH2(C5H4N-2)]C104 with two equivalents of (triphenylphosphine)gold(I) acetylacetonate, which induce double deprotonation and subsequent auration of the methylene group (Scheme 2)150-152. [Pg.244]

In addition, LHMDS has been successfully used in the deprotonation of other functionalized phosphonium salts, such as oxazo-lidinone methyl 10 (eq 46), A(-methylfomiamide 11 (eq 47), and thiazolylmethyl 12 (eq 48). ... [Pg.362]


See other pages where Functional Phosphonium Salts is mentioned: [Pg.39]    [Pg.419]    [Pg.925]    [Pg.39]    [Pg.48]    [Pg.79]    [Pg.79]    [Pg.82]    [Pg.84]    [Pg.84]    [Pg.87]    [Pg.138]    [Pg.19]    [Pg.65]    [Pg.54]    [Pg.326]   


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Phosphonium salts

Phosphonium salts functionalized

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