Potassium Carbonate → Tert-butyl 4-(morpholine-4-carbonyl)piperazine-1-carboxylate

반응식

[C:1]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[C:14](=[O:17])([O-])[O-].[K+].[K+]>C(#N)C.ClCCl>[C:4]([O:3][C:1]([N:8]1[CH2:9][CH2:10][N:11]([C:1]([N:8]2[CH2:13][CH2:14][O:17][CH2:10][CH2:9]2)=[O:2])[CH2:12][CH2:13]1)=[O:2])([CH3:7])([CH3:6])[CH3:5]

참가 물질

실험 절차

Amine preparation: A mixture of 4-morpholinocarbonyl chloride (0.38 ml), 1-BOC-piperazine (552 mg) and potassium carbonate (439 mg) in acetonitrile (7 mL) was stirred at room temperature for 3 hours. The reaction mixture was then diluted with dichloromethane, washed with brine, dried (MgSO4) and the solvent removed in vacuo to yield 4-(morpholine-4-carbonyl)-piperazine-1-carboxylic acid tert-butyl ester (865 mg). Treatment of this compound with HCl in dichloromethane/methanol yielded the title compound, which was isolated as the hydrochloride salt.