Hydrazine hydrate (1:1) → 8-(4-(4-(cyclopropanecarbonyl) piperazine-1-carbonyl)phenyl)-9-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one
Reaction equation
[CH:1]1([C:4]([N:6]2[CH2:11][CH2:10][N:9]([C:12]([C:14]3[CH:19]=[CH:18][C:17]([CH:20]4[CH:29]([C:30]5[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=5)[C:28](=O)[C:27]5[C:26]([C:37]([O:39]C)=O)=[CH:25][CH:24]=[CH:23][C:22]=5[NH:21]4)=[CH:16][CH:15]=3)=[O:13])[CH2:8][CH2:7]2)=[O:5])[CH2:3][CH2:2]1.O.[NH2:42][NH2:43]>>[CH:1]1([C:4]([N:6]2[CH2:11][CH2:10][N:9]([C:12]([C:14]3[CH:19]=[CH:18][C:17]([CH:20]4[NH:21][C:22]5[C:27]6[C:28](=[N:42][NH:43][C:37](=[O:39])[C:26]=6[CH:25]=[CH:24][CH:23]=5)[CH:29]4[C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=4)=[CH:16][CH:15]=3)=[O:13])[CH2:8][CH2:7]2)=[O:5])[CH2:3][CH2:2]1Participants
3
Reactant 2
Product 1
Procedure
A mixture of methyl 2-(4-(4-(cyclopropanecarbonyl)piperazine-1-carbonyl)phenyl)-4-oxo-3-phenyl-1,2,3,4-tetrahydroquinoline-5-carboxylate (300 mg, 0.55 mmol) and hydrazine monohydrate (3 mL) was stirred room temperature for 3 h. The resulting mixture was evaporated under reduced pressure to 10 mL and then filtered; the filtrate was concentrated to give the crude product. The crude product was purified by pre-HPLC to give 8-(4-(4-(cyclopropanecarbonyl)piperazine-1-carbonyl)phenyl)-9-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one as a white solid (4 mg, yield 19%). 1H-NMR (400 MHz, DMSO-d6) δ (ppm): 0.71-0.74 (m, 4H), 1.97 (t, 1H), 3.46-3.76 (m, 8H), 4.36 (dd, 1H), 4.83 (dd, 1H), 7.13-7.23 (m, 6H), 7.30 (d, 2H), 7.38 (t, 3H), 7.47 (s, 1H), 7.59 (t, 1H), 12.17 (s, 1H); LC-MS (ESI) m/z: 520 (M+1)+.