Ammonia → Benzyl 3-[4-carbamoyl-3-(3-methoxypropoxy)benzyloxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidin-1-carboxylate

Participants

Reaction Steps

The solution of 0.290 g of benzyl 3-[4-chlorocarbonyl-3-(3-methoxypropoxy)benzyloxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate in 1.0 ml of toluene is added dropwise slowly to 2.30 ml of ammonia solution (7M in methanol, precooled to 0° C.). After 15 minutes, the reaction solution is poured onto water (20 ml) and extracted with tert-butyl methyl ether (2×20 ml). The organic phases are washed with brine (1×30 ml), dried over sodium sulphate, filtered and concentrated by evaporation. The title compound is obtained as a colourless oil from the residue by means of flash chromatography (SiO2 60F). Rf=0.06 (2:1 EtOAc-heptane); Rt=5.56.

Provenance & Evidence