[Preparation of some pyrido (2,3-e)-1,4-diazepines]

By treating pyrido (2,3-e)-1,4-diazepinones with alkyl halides, N4-alkylpyrido (2,3-e)-1,4-diazepines were obtained. In addition a number of N1-alkylpyrido (2,3-e)-1,4-diazepines were prepared from alkyltetrahydronaphthyridinones by the Schmidt reaction. Preliminary pharmacological screening of some of these compounds showed no appreciable activity.