Condensations at the methyl groups of S-acetylbenzamide and diacetylimide were accomplished through their dipotassio salts IIa-b, which were prepared by means of two molecular equivalents of potassium amide in liquid ammonia. The condensations involved benzylation, benzoylation, and an aldol-type condensation with benzyl chloride, meth) 1 benzoate, and benzophenone, respectively. The benzplations of IIa-b were realized in ...