Ethyl Acetate → Ammonia

Participants

Reaction Steps

4-(8-aminooctyl)-2-[(1R)-3-(diisopropylamino)-1-phenylpropyl]phenol (Preparation 53, 170 mg, 0.39 mmol) and N-{2-(benzyloxy)-5-[(1R)-2-bromo-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl]phenyl}methanesulfonamide (Prepared according to WO2005/080324, 191 mg, 0.37 mmol) were heated at 90° C. in dimethylsulfoxide (0.5 ml) overnight. Ethyl acetate and saturated aqueous sodium hydrogen carbonate were added and the organics separated, washed with saturated aqueous sodium hydrogen carbonate, brine, dried (magnesium sulphate) and the solvent removed in vacuo. The residue was purified by column chromatography on silica gel eluting with dichloromethane:methanol:880 ammonia (99/1/0.1 to 95/5/0.5 by volume) to furnish the title compound as a yellow oil, 90 mg.

Provenance & Evidence