Reagents and methods for stereospecific fluoromethylation
申请人:PROTOTEK, INC.,
公开号:EP0442754A2
公开(公告)日:1991-08-21
The preparation of magnesium benzyl fluoromalonate and other equivalent materials, the synthetic equivalents of the -CH₂F moiety, is described. Reaction between these reagents and the in situ-formed imidazolides of various carboxylic acids gives beta-keto-alpha-fluoroesters, which upon hydrogenation and spontaneous decarboxylation yields fluoromethyl ketones in excellent yields. The overall transformation from RCOOH to RCOCH₂F is thus illustrated.