Ammonium Chloride → tert-Butyl 4-(1-hydroxyethyl)piperidine-1-carboxylate

Participants

Reaction Steps

To a solution of 0.400 g (1.76 mmol) of 4-acetyl-piperidine-1-carboxylic acid tert-butyl ester in ethanol (3 mL) is added 0.134 g (3.52 mmol) of sodium borohydride. The mixture is stirred at room temperature for 1 hour then a saturated aqueous solution of ammonium chloride is added to consume excess reactants. The mixture is washed with ethyl acetate and the combined organic phase is dried over anhydrous sodium sulfate and concentrated under reduced pressure to provide 0.390 g (96.6%) of 4-(1-hydroxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester as a colorless oil.

Provenance & Evidence