1-Chloroethyl chloroformate → HCID 69677716, compound

Participants

Reaction Steps

To a solution of (2R)-4-benzyl-1-(3,5-dichlorobenzoyl)-2-(3,4-dimethylbenzyl)piperazine (5.03 g) in dichloromethane (50 ml) was added 1-chloroethyl chloroformate (1.51 ml) slowly at 0° C., and then the mixture was heated at reflux under stirring. After 5.5 hours, the solvent was removed in vacuo and then the resulting residue was dissolved in methanol (20 ml) and refluxed for 0.5 hour. After removal of the solvent, the resulting residue was triturated with isopropyl ether to afford (2R)-1(3,5-dichlorobenzoyl)-2-(3,4-dimethylbenzyl)piperazine hydrochloride (4.84 g).

Provenance & Evidence