反应详情

3-Hydroxy-4-nitrobenzaldehyde (0.334 g, 2.0 mmol) was added to a stirred mixture of 5-(1H-indol-2-yl)-2-methoxy-phenylamine (0.476 g, 2.0 mmol) in methylene chloride (125 mL), followed by acetic acid (0.2 g). The resulting mixture is stirred at room temperature for 1 hour. Sodium triacetoxyborohydride (0.46 g, 2.2 mmol) was added in one portion, and the resulting homogeneous solution was stirred at room temperature for 3 days. Saturated aqueous sodium bicarbonate solution (100 mL) was added and the mixture is stirred for 2 hours. The mixture was shaken, the organic layer was separated and dried over Na2SO4. The solvent was evaporated to give a brown gum. Recrystallization from methanol gave the product (500 mg), mp 134-135° C.

1. stirringthe resulting homogeneous solution was stirred at room temperature for 3 days
2. stirringthe mixture is stirred for 2 hours
3. stirringThe mixture was shaken
4. customthe organic layer was separated
5. dry with materialdried over Na2SO4
6. customThe solvent was evaporated
7. customto give a brown gum
8. customRecrystallization from methanol