Heterocyclic compounds from 3,3‐dimercapto‐1‐aryl‐2‐propen‐1‐ones. Note 1. 4‐Ary1‐1,3‐dihydro‐2H‐1,5‐benzodiazepine‐2‐thiones

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Abstract
A series of new 4‐aryl‐1,3‐dihydro‐2H‐1,5‐benzodiazepine‐2‐thiones (3) has been synthesized by condensing the 3,3‐dimercapto‐1‐aryl‐2‐propen‐1‐ones with o‐phenylenediamine. The structure was established by the results of acid cleavage and by nmr spectra. The alkylation of compounds 3 gave 2‐alkylthio‐4‐aryl‐3H‐1,5 benzodiazepines (10).