Hydrochloric Acid → HCID 66649293, compound

Participants

Reaction Steps

To a solution of 1,1-dimethylethyl(3R)-3-methyl-1-piperazinecarboxylate (605 mg, 2.56 mmol) in DCM (20 ml) was added DIPEA (1.12 ml, 6.39 mmol) and then portionwise 4-[(trifluoromethyl)oxy]benzenesulfonyl chloride (0.455 ml, 2.68 mmol) at room temp and the resultant mixture stirred under Ar for 16 h. DCM (75 ml) and a 1M HCl solution (75 ml) were added, the layers were separated and the organic layer was then washed with 2M NaOH solution (75 ml), the organic layers were separated, dried (MgSO4) and concentrated to dryness. 1,1-Dimethylethyl(3R)-3-methyl-4-({4-[(trifluoromethyl)oxy]phenyl}sulfonyl)-1-piperazinecarboxylate was isolated as a slowly crystallizing white solid.

Provenance & Evidence