反应详情

To piperazine-1,4-dicarboxylic acid tert-butyl ester 4-nitro-phenyl ester (500 mg) in tetrahydrofuran (5 ml) was added N-(2-methoxyethyl)methylamine (254 mg) and the reaction mixture was heated to reflux for 24 hours. The reaction mixture was reduced in vacuo and purified using flash chromatography to yield 4-[(2-methoxy-ethyl)-methyl-carbamoyl]-piperazine-1-carboxylic acid tert-butyl ester (304 mg). Treatment of this compound with HCl in dichloromethane/methanol yielded piperazine-1-carboxylic acid (2-methoxy-ethyl)-methyl-amide, which was isolated as the hydrochloride salt.

1. temperaturethe reaction mixture was heated
2. temperatureto reflux for 24 hours
3. custompurified