Hydrochloric Acid → HCID 67402217, compound

Participants

Reaction Steps

Triethylamine (3.4 mL) was added to a dichloromethane (300 mL) solution of Benzyl piperidin-4-ylcarbamate (2.2 g) at 0° C. followed by the dropwise addition of 2-chloroethanesulfonyl chloride (2.6 mL; TCI) and the resulting mixture was slowly stirred overnight with raising to room temperature. 1 N Hydrochloric acid (90 mL; WAKO) was added to the reaction mixture solution, the resulting mixture was stirred for approx. 10 minutes, then the reaction mixture was extracted with chloroform, the organic layer was dried, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (Yamazen; chloroform/methanol). 30 mg of this purified compound was dissolved in methanol (1 mL) followed by the addition of dimethylamine (2 M, 0.2 mL; Ald), the resulting mixture was stirred at 100° C. for 2 hours with microwave irradiation, and then the solvent was evaporated under reduced pressure. The title compound was obtained from this residue according to the method described in Step c of Reference Example N-14.

Provenance & Evidence