[CH3:1][O:2][C:3]1[CH:22]=[CH:21][CH:20]=[CH:19][C:4]=1[CH2:5][NH:6][C:7]1[CH:16]=[CH:15][C:14]2[C:13]([C:17]#[N:18])=[CH:12][CH:11]=[CH:10][C:9]=2[N:8]=1.Cl.[NH2:24][OH:25].C(=O)([O-])[O-].[Na+].[Na+]>C(O)C.O>[OH:25][NH:24][C:17]([C:13]1[C:14]2[CH:15]=[CH:16][C:7]([NH:6][CH2:5][C:4]3[CH:19]=[CH:20][CH:21]=[CH:22][C:3]=3[O:2][CH3:1])=[N:8][C:9]=2[CH:10]=[CH:11][CH:12]=1)=[NH:18]A stirred suspension of 2-(2-methoxy-benzylamino)-quinoline-5-carbonitrile (example 136, step B) (289 mg, 1.0 mmol), hydroxylamine hydrochloride (257 mg, 3.7 mmol) and sodium carbonate (212 mg, 2.0 mmol) in ethanol (4 ml) and water (4 ml) was heated under reflux conditions for 17 h, water (5 ml) was added, the precipitate was collected by filtration, washed with water and heptane and dried to yield the crude product as solid which was further purified by crystallization (diethyl ether/ methanol) to yield N-hydroxy-2-(2-methoxy-benzylamino)-quinoline-5-carboxamidine as off-white solid (290 mg, 90%). MS (ISP): m/e=323.2 (M+H+); m.p. 161° C.
Loading…
