Hydroxylamine → HCID 87543930、化合物

反応式

[Cl:1][C:2]1[CH:26]=[CH:25][C:5]([CH2:6][N:7]2[C:12](=[O:13])[C:11]([O:14][CH3:15])=[N:10][N:9]([C:16]3[CH:17]=[C:18]([CH:21]=[CH:22][CH:23]=3)[C:19]#[N:20])[C:8]2=[O:24])=[CH:4][CH:3]=1.[NH2:27][OH:28]>C(O)C.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][N:7]2[C:12](=[O:13])[C:11]([O:14][CH3:15])=[N:10][N:9]([C:16]3[CH:17]=[C:18]([CH:21]=[CH:22][CH:23]=3)/[C:19](/[NH2:20])=[N:27]/[OH:28])[C:8]2=[O:24])=[CH:25][CH:26]=1

参加物

反応条件

温度: 80 °C

実験手順

According to Scheme 9 Step 1: To a stirred solution of 3-(4-(4-chlorobenzyl)-6-methoxy-3,5-dioxo-4,5-dihydro-1,2,4-triazin-2(3H)-yl)benzonitrile (150 mg, 0.41 mmol) in ethanol (5 ml) was added hydroxylamine (0.100 ml of a 50% solution in water, 1.2 mmol) and the mixture was heated at 80° C. overnight. The reaction mixture was quenched with a saturated ammonium chloride solution and extracted with ethyl acetate (×3). The combined organic layers were successively washed with water, with brine, dried over MgSO4, filtered and concentrated to afford (Z)-3-(4-(4-chlorobenzyl)-6-methoxy-3,5-dioxo-4,5-dihydro-1,2,4-triazin-2(3H)-yl)-N′-hydroxybenzamidine (150 mg, 99%) which was used in the next step without any further purification.