Three acyclic N, X-diacylglycines have been prepared which represent possible intermediates in the synthesis of penicillinlike compounds. The acids were obtained in each case by hydrogenolysis of the corresponding benzyl esters. Synthesis of the benzyl esters was accomplished by three different routes:(1) acylation of an N-monoacylglycine benzyl ester,(2) alkylation of a diamide with a benzyl haloacetate and (3) formation and ...
