Trifluoroacetic acid → 4-(4-Chlorophenyl)-4-methoxy-3-methyl-3-piperidinol

Participants

Reaction Conditions

Reaction Steps

4-(4-Chloro-phenyl)-3-hydroxy-4-methoxy-3-methyl-piperidine-1-carboxylic acid tert-butyl ester (260 mg, 0.74 mmol) was dissolved in methylene chloride (5 mL) and the resulting solution was cooled to 0° C. Trifluoroacetic acid (1 mL) was added and the mixture was stirred 2 h. Solvents were then removed under reduced pressure and the residue dissolved in ethyl acetate. Water and 6 N aqueous sodium hydroxide were added until the pH=10. The organic phase was washed with brine and dried over magnesium sulfate, filtered and concentrated to afford 4-(4-chloro-phenyl)-4-methoxy-3-methyl-piperidin-3-ol.

Provenance & Evidence