Hydrochloric Acid → 4-(((1-(Tert-butoxycarbonyl)piperidin-4-yl)(4-chlorophenethyl)amino)methyl)benzoic acid

Participants

Reaction Steps

tert-Butyl 4-((4-chlorophenethyl)(4-(methoxycarbonyl)benzyl)amino)piperidine-1-carboxylate obtained in Step 1 was dissolved in MeOH (5 mL/mmol), NaOH (5 eqs) (as a 0.5 N aqueous solution) was added and the reaction mixture was stirred at room temperature for 15 hours.). pH of the reaction was made neutral by careful addition of 0.5 N HCl, and methanol was removed in vacuo. The precipitated product was filtered off, washed several times with acetone/diethyl ether mixture (1:2 v/v) and dried in the air. It was found to be of sufficient purity to be used in the next step without further purification.

Provenance & Evidence