A mew method of synthesis of 1,2,3,4‐telrahydro‐5<i>H</i>‐5‐oxo‐1,4‐benzodiazepines

Abstract

Abstract A new one‐step facile method for the synthesis of 1,12,3,4‐tetrahydro5 H ‐5‐oxo‐1,4‐benzo‐diuzepines is described. The method involves the addition of methyl anlhranilates to elhyl‐enimine followed by intramolecular cyclizalion of the resulting intermediate compounds. Another attempted method starting from β‐anilinoethylisocyanales is also described.