Abstract
2-Substituted benzimidazoles and 3,1,5-benzoxadiazepines have been synthesized in excellent yields in a single pot by cyclodehydration of N-acyl-1,2-phenylenediamines and N,N′-diacyl-1,2-phenylenediamines prepared in situ from the corresponding 1,2-phenylenediamines and an acid chloride, respectively.
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