Hydrochloric Acid → HCID 57429712, compound

Participants

Reaction Steps

A solution of 1.2 g of 4-(1-ethoxycarbonyl-cyclopentyl)-piperidine-1-carboxylic acid tert-butyl ester in a mixture of 100 ml of EtOH and 50 ml of an 1M aqueous NaOH is stirred at 70° for 14 days, EtAc is added and two phases obtained are are separated. The aqueous layer obtained is acidified with hydrochloric acid (pH 2-3) and extracted with EtAc. The organic layer obtained is washed with brine, dried and solvent is evaporated. 4-(1-Carboxy-cyclopentyl)-piperidine-1-carboxylic acid tert-butyl ester is obtained.

Provenance & Evidence