Ammonia → HCID 57236670, compound

Participants

Reaction Steps

An amount of 1.99 g (0.012 mole) of potassium iodide is dissolved in 6 ml of water. The obtained solution is diluted with 20 ml of dioxane; an addition is then made at 25°, with stirring, of a solution of 4.3 g (0.01 mole) of N,N-diethyl-1-(2-benzoyl-4-chlorophenyl)-5-(chloromethyl)-1H-1,2,4-triazole-3-carboxamide in 40 ml of dioxane, and the reaction solution heated for 1 hour at 50°. There is then added 35 ml of conc. aqueous ammonia solution, the mixture heated for a further 2 hours at 50°, and subsequently concentrated in vacuo. Water is added to the residue and extraction performed twice with methylene chloride. The organic phase is washed with water and saturated sodium chloride solution; it is then dried over sodium sulphate and concentrated in vacuo to dryness. The residue is recrystallised from benzene/cyclohexane to obtain pure N,N-diethyl-6-phenyl-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-carboxamide, M.P. 175°-177° .

Provenance & Evidence