Trifluoroacetic acid → [(3SR,4RS)-3-(3,4-Dichloro-phenyl)-4-methylamino-pyrrolidin-1-yl]-[1-(1-methyl-cyclopropanecarbonyl)-piperidin-4-yl]-methanone

Participants

Reaction Steps

To a stirred solution of {(3RS,4SR)-4-(3,4-dichloro-phenyl)-1-[1-(1-methyl-cyclopropanecarbonyl)-piperidine-4-carbonyl]-pyrrolidin-3-yl}-methyl-carbamic acid tert-butyl ester (3.02 g, 5.61 mmol) in CH2Cl2 (30 ml) was added TFA (4.3 ml). The reaction mixture was stirred at RT for 20 hours, aqueous NaHCO3 was added until pH=8 and the product was extracted with CH2Cl2. The combined organic phase were dried over Na2SO4. The product was purified by column chromatography (SiO2, H/EtOAc/MeOH, 50:50:0 to 0:90:10) to afford 1.79 g (73%) of the title product as a light brown oil. ES-MS m/e: 338.3 (M+H+).

Provenance & Evidence