4-Piperidinecarboxylic acid → 1-(2-Naphthylsulfonyl)-4-piperidinecarboxylic acid

Participants

Reaction Steps

26.0 g (0.2 mol) of piperidine-4-carboxylic acid were dissolved in 250 ml of pyridine and the solution was treated with 47.6 g (0.2 mol) of 2-naphthylsulfonyl chloride in portions at room temperature. The whole was stirred at room temperature for about 5 h. The reaction mixture was concentrated under reduced pressure and the residue was partitioned between ethyl acetate and 2 M hydrochloric acid. The organic phase was dried and concentrated under reduced pressure. 48.5 g (75%) of the product were obtained.

Provenance & Evidence