反应详情

1.93 g (4.24 mmol) of (S)-8-chloro-1-(5-dipropylaminomethyl-1,2,4-oxadiazol-3-yl)-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one in 20 ml of ethanol were treated with 0.88 ml (4.2 mmol) 4.78N ethanolic hydrochloric acid. After stirring at room temperature for 10 minutes the solution obtained was completely freed from the solvents. The residue was recrystallized from ethanol/ether. There were obtained 1.42 g (68%) of (S)-8-chloro-1-(5-dipropylaminomethyl-1,2,4-oxadiazol-3-yl)-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one hydrochloride (1:1) as white crystals; m.p. 183°-185° and [α]D20 =+24.4° (MeOH, c=1%).

1. customobtained
2. customThe residue was recrystallized from ethanol/ether