R. Benelbaghdadi et al., SYNTHESIS OF NEW BIHETEROCYCLIC COMPOUNDS STARTING FROM DIAZEPAM, Bulletin des Societes chimiques belges, 106(12), 1997, pp. 813-815
We report here a one-step synthesis of [1,2,4]triazolo[4,3-d][1,4]benz
odiazepin 4, 5, and [1,2] oxazolo[5,4,b][1,4]benzodiazepine 6-8 by 1,3
-dipolar cycloaddition of nitrilimines and nitrile oxides with the ben
zodiazepine 3.