SYNTHESIS OF SOME NEW SULFIDE, SULFONE AND TRIAZOLO DERIVATIVES OF PYRIDOBENZODIAZEPINES

Synthesis of some new sulphide derivatives of 2,4-dimethyl-5,11-dihydr o-5H-pyrido [2,3-b] [1,4] benzodiazepin-5-thione (2) was carried out b y reacting 2 with benzyl chloride and 2-bromobutane respectively. On o xidising the benzyl sulphide derivative with oxone, the corresponding sulphone was obtained. 3, 11,13-Trimethyl pyridobenzo-(2,3-b)-1 ,2,4-t riazolo [4,3-d][1,4] diazepine was synthesised from 2. The structures of compounds have been established on the basis of PMR spectral studie s.