反应详情

To a solution of N3-(3,5-dichlorophenyl)-1H-1,2,4-triazole-3,5-diamine Intermediate 2 (200 mg, 819 μmol) in MeOH (3.5 ml) was added 3-chloro-4-(trifluoromethyl)benzaldehyde (94.0 mg, 451 μmol) followed by acetic acid (36.7 mg, 35.0 μl, 611 μmol). The reaction was stirred at room temperature for 15 minutes, 2-picoline borane complex (52.6 mg, 492 μmol) was added and the stirring was continued for 4 days. The reaction mixture was poured into 0.1N HCl solution (20 ml). The resulting suspension was filtered to collect the solid. Purification by flash chromatography (silica gel, 24 g, 2% to 4% MeOH in DCM) afforded a white solid as desired product (121.4 mg, 68% yield). MS +m/z: 436 (M+H)+

1. addition2-picoline borane complex (52.6 mg, 492 μmol) was added
2. waitthe stirring was continued for 4 days
3. filtrationThe resulting suspension was filtered
4. customto collect the solid
5. customPurification by flash chromatography (silica gel, 24 g, 2% to 4% MeOH in DCM)