反应详情

The solution of 0.185 g of benzyl 3-[1-(2-aminoethyl)-7-bromo-3-methyl-1H-indol-6-ylmethoxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate in 1.1 ml of dichloromethane is admixed successively with 0.50 ml of pyridine and 0.21 ml of acetic anhydride and stirred at room temperature for 2 hours. The reaction mixture is poured onto water (40 ml) and extracted with ethyl acetate (2×40 ml). The organic phases are washed successively with 1M sodium hydrogencarbonate solution (40 ml) and brine (40 ml), dried over sodium sulphate, filtered and concentrated by evaporation. The title compound is obtained as a white foam from the residue by means of flash chromatography (SiO2 60F). Rf=0.17 (EtOAc-heptane=4:1); Rt=5.89.

1. additionThe reaction mixture is poured onto water (40 ml)
2. extractionextracted with ethyl acetate (2×40 ml)
3. washThe organic phases are washed successively with 1M sodium hydrogencarbonate solution (40 ml) and brine (40 ml)
4. dry with materialdried over sodium sulphate
5. filtrationfiltered
6. concentrationconcentrated by evaporation