反应详情

Cyclopropylamine (1.39 mL, 19.8 mmol) was added to a sol. of cyclopropanecarboxylic acid 4-chloro-3-formyl-benzylamide (3.13 g, 13.2 mmol) in MeOH (28 mL). The mixture was stirred overnight, and NaBH4 (996 mg, 26.0 mmol) was added in portions. The mixture was stirred for 3 h, and aq. 1M NaOH (70 mL) was added. The solvents were partially removed under reduced pressure, and the aq. residue was extracted with EtOAc (2×). The combined org. extracts were washed with brine, dried over MgSO4, filtered, and the solvents were removed under reduced pressure. Purification of the crude by FC (CH2Cl2→MeOH/CH2Cl2 1:9) yielded the title compound (3.37 g, 92%). LC-MS: tR=0.62 min; ES+: 279.35.

1. stirringThe mixture was stirred for 3 h
2. customThe solvents were partially removed under reduced pressure
3. extractionthe aq. residue was extracted with EtOAc (2×)
4. washextracts were washed with brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. customthe solvents were removed under reduced pressure
8. customPurification of the crude by FC (CH2Cl2→MeOH/CH2Cl2 1:9)