Oxaprozin → Butanedioic acid;bis(2-hydroxy-1,2-diphenylethanone)

Beteiligte Stoffe

Reaktionsschritte

A process for the preparation of 4,5-diphenyloxazole-2-propanoic acid of formula I ##STR2## by esterification of benzoin with succinic anhydride to give benzoin hemisuccinate, and cyclization to (I) by direct addition of ammonium acetate or urea to the mixture containing the hemisuccinate,

Herkunft & Nachweise