The reaction of U-silylated enolates of carboxylic esters with benzyne proceeds smoothly to afford ortho-a1 kyl benzoic acids in moderate yields. ... A variety of reactions using 0-silylated enolates (1) of carboxylic esters have been documented. 1 In most cases, the nucleophilicity of their a-carbon causes the reactions with numerous electrophiles. Also, in a few cases, the formation of an intermediate radical containing trivalent a-carbon has been proposed.* Here we ...
