Potassium Cyanide → isopropyl 5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine 3-carboxylate
반응식
[CH3:1][N:2]1[C:8](=[O:9])[C:7]2[CH:10]=[CH:11][CH:12]=[CH:13][C:6]=2[N:5]2[CH:14]=[N:15][C:16]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[C:4]2[CH2:3]1.[C-:22]#N.[K+]>CC(O)C>[CH3:1][N:2]1[C:8](=[O:9])[C:7]2[CH:10]=[CH:11][CH:12]=[CH:13][C:6]=2[N:5]2[CH:14]=[N:15][C:16]([C:17]([O:19][CH:20]([CH3:22])[CH3:21])=[O:18])=[C:4]2[CH2:3]1참가 물질
4
실험 절차
285 mg (1 mmol) of ethyl 5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate and 50 mg of potassium cyanide are stirred at 60° C. for 72 hours in 10 ml of 2-propanol. Then, the mixture is concentrated on a rotary evaporator, the residue is partitioned between water and chloroform, extracted twice with chloroform, the chloroform phase is dried over magnesium sulphate and evaporated. There is obtained isopropyl 5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine 3-carboxylate of melting point 190°-192° C. This product is uniform according to thin-layer chromatography.