Water → methyl 7-[4-(2-butoxyethoxy)phenyl]-1-(3-ethoxypropyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate

Participants

Reaction Steps

To a solution of methyl 7-[4-(2-butoxyethoxy)phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (400 mg) and 3-ethoxypropionaldehyde (0.52 g) in 1,2-dichloroethane (10 ml) was added sodium triacetoxyborohydride (0.64 g) at room temperature, and the mixture was stirred for 20 hours. To the reaction system was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine and dried with magnesium sulfate. After concentration under reduced pressure, the residue was separated and purified with column chromatography (ethyl acetate:hexane=1:4→1:3) to give methyl 7-[4-(2-butoxyethoxy)phenyl]-1-(3-ethoxypropyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate (452 mg) as yellow oil.

Provenance & Evidence