S. El Hazazi et al., Ethyl 5-methylthio-3-(4-nitrophenyl)-3a-phenyl-3a,4-dihydro-3H-[1,2,4]triazolo[4,3-a][1,5]benzodiaze-pine-1-carboxylate, ACT CRYST C, 56, 2000, pp. E457-E458
Condensation of N-p-nitrophenyl-C-ethoxycarbonylnitrilimine with 2-methylth
io-4-phenyl-3H-1,5-benzodiazepine leads to the title compound, C26H23N5O4S.
It has been established that 1,3-dipolar cycloaddition occurs on the C4 =
N5 double bond of the 1,5-benzodiazepine.