Perchloric Acid → 6-phenyl-8-chloro-4H-s-triazolo[4,3-a][1,4]benzodiazepine-1-carboxaldehyde-diethylacetal perchlorate

Participants

Reaction Steps

An amount of 0.13 g (0.0013 mole) of perchloric acid is added to a solution of 0.5 g (0.00126 mole) of 6-phenyl-8-chloro-4H-s-triazolo[4,3 -a][1,4]benzodiazepine-1-carboxaldehyde-diethylacetal in 3 ml each of acetone and methanol. The salt crystallises out after the addition of 5 ml of petroleum ether. Filtration under suction is then performed and 6-phenyl-8-chloro-4H-s-triazolo[4,3-a][1,4]benzodiazepine-1-carboxaldehyde-diethylacetal-perchlorate obtained, which decomposes at 250°-265°.

Provenance & Evidence