反应详情

To a solution of 1-benzyl-2-isopropyl-5-(methoxymethoxy)-1H-indole-3-carboxaldehyde (Compound 4, 103 mg, 0.31 mmol) in methanol (5.0 ml) was added 3,5-difluorobenzylamine (49 μl, 0.40 mmol), and acetic acid (2 drops). After stirring at room temperature for 1 h, sodium cyanoborohydride (29 mg, 0.47 mmol) was added and the reaction was stirred for 5 h. More 3,5-difluorobenzylamine (50 μl, 0.40 mmol) was added, and the reaction was stirred for 64 h. The solvent was removed and the crude reaction mixture was purified by flash chromatography on silica gel eluting with 10-50% EtOAc-hexanes to yield 1-(1-benzyl-2-isopropyl-5-(methoxymethoxy)-1H-indol-3-yl)-N-(3,5-difluorobenzyl)methanamine (Compound 5) as a light greenish yellow oil.

1. stirringthe reaction was stirred for 5 h
2. stirringthe reaction was stirred for 64 h
3. customThe solvent was removed
4. customthe crude reaction mixture
5. customwas purified by flash chromatography on silica gel eluting with 10-50% EtOAc-hexanes