反应详情

Cyclopropylamine (3.26 g, 0.057 mol) was added to a solution of 5-chloro-2-isopropylbenzaldehyde (II) (10 g, 0.054 mol, 99.3 GC % by area) in methanol (100 ml) and the mixture was stirred at room temperature for 1 hour. Platinum on activated carbon (0.2 g, 5% Pt, dry) was subsequently added, the reaction vessel was flushed with nitrogen and pressurized to 6 bar with hydrogen at a maximum of 25° C. for 8 hours. The contents of the autoclave were filtered through Celite, washed with methanol and the solvent was distilled off under reduced pressure. N-(5-Chloro-2-isopropylbenzyl)cyclopropanamine (9.8 g, 96.8 GC-% by area, 78.0% of theory) was obtained as a light-yellow oil.

1. customthe reaction vessel was flushed with nitrogen
2. waitpressurized to 6 bar with hydrogen at a maximum of 25° C. for 8 hours
3. filtrationThe contents of the autoclave were filtered through Celite
4. washwashed with methanol
5. distillationthe solvent was distilled off under reduced pressure