反应详情

To a stirred sol. of compound D8 (0.38 g, 0.594 mmol) in CH2Cl2 (3.0 mL) were added EDC.HCl (0.285 g, 1.49 mmol), HOBt (0.109 g, 0.713 mmol), DMAP (2.0 mg, 0.15 mmol) and DIPEA (0.467 mL, 2.67 mmol). After 15 min cyclopropyl-(2,3-dichloro-benzyl)amine (0.257 g, 1.19 mmol) was added and stirring was continued for 7 days. Every day cyclopropyl-(2,3-dichlorobenzyl)amine (prepared by reductive amination from 2,3-dichlorobenzaldehyde and cyclopropylamine, 0.128 g, 0.59 mmol) was added. The reaction mixture was partitioned between aq. 1M HCl and CH2Cl2, and the phases were separated, washed with aq. sat. NaHCO3, dried over MgSO4, filtered, and the solvents were removed in vacuo. Purification of the crude by FC (heptane/EtOAc 7/3→1/1) yielded the title product (60 mg, 12%) as a yellow oil. LC-MS: tR=1.28 min, ES+: 837.48.

1. customThe reaction mixture was partitioned between aq. 1M HCl and CH2Cl2
2. customthe phases were separated
3. washwashed with aq. sat. NaHCO3
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customthe solvents were removed in vacuo
7. customPurification of the crude by FC (heptane/EtOAc 7/3→1/1)