反应详情

A methylene chloride (15 ml) solution of 5-(methoxycarbonyl)-2-methylindole (0.567 g) and 4-benzyloxybenzaldehyde (0.700 g) is dropwise added to a methylene chloride (15 ml) solution of trifluoroacetic acid (0.513 g) and triethylsilane (1.047 g) in an ice-water bath, over a period of 15 minutes. This is stirred for 30 minutes in the ice-water bath, and an aqueous solution of 2 M sodium hydroxide is added thereto to stop the reaction. The organic layer is washed with a saturated saline solution, dried and concentrated. The resulting residue is purified through silica gel column chromatography (eluent:ethyl acetate/hexane=3/7) to obtain 3-(4-benzyloxybenzyl)-5-(methoxycarbonyl)-2-methylindole (62) (0.510 g).

1. customthe reaction
2. washThe organic layer is washed with a saturated saline solution
3. customdried
4. concentrationconcentrated
5. customThe resulting residue is purified through silica gel column chromatography (eluent:ethyl acetate/hexane=3/7)