Benzyl chloroformate → HCID 54373813、化合物

反応式

Cl[C:2]([O:4][CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)=[O:3].[NH:12]1[CH2:17][CH2:16][CH:15]([N:18]2[CH2:23][CH2:22][N:21]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:20][CH2:19]2)[CH2:14][CH2:13]1.C(N(C(C)C)C(C)C)C>C(Cl)Cl>[CH2:5]([O:4][C:2]([N:12]1[CH2:17][CH2:16][CH:15]([N:18]2[CH2:19][CH2:20][N:21]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:22][CH2:23]2)[CH2:14][CH2:13]1)=[O:3])[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

参加物

実験手順

A solution of 7.18 mL (48.0 mmol) benzyl chloroformate in 50 mL DCM was added dropwise to 12.3 g (45.7 mmol) tert-butyl 4-piperidin-4-yl-piperazine-1-carboxylate and 8.2 mL (50 mmol) N-ethyldiisopropylamine in 200 mL DCM while cooling with ice and the reaction mixture was stirred overnight at RT. It was washed with 200 mL of 15% K2CO3 solution, the organic phase was separated off and dried over Na2SO4. After elimination of the desiccant and solvent the residue was further reacted without any further purification.