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Propargyl xanthates

Scheme 6.35. O-Alkylation of carboxylic acids with S-propargyl xanthates [134],... Scheme 6.35. O-Alkylation of carboxylic acids with S-propargyl xanthates [134],...
A-Propargyl dithiocarbonates (xanthates) 533 bearing a variety of substituents were convenient precursors of 1,3-dithiole-2-ylidene derivatives 534 by reaction with active methylene compounds involving a [3,3]-sigmatropic rearrangement (Equation 64) <1995TL5171>. In all cases except dibenzoylmethane, a mixture of regioisomers was obtained, with double bond exo or endo. [Pg.1018]

See other pages where Propargyl xanthates is mentioned: [Pg.253]    [Pg.234]    [Pg.1521]    [Pg.253]    [Pg.234]    [Pg.1521]    [Pg.92]    [Pg.212]    [Pg.5]   
See also in sourсe #XX -- [ Pg.116 ]



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