反应详情

A solution of trans-2-(4-tert-Butoxycarbonylamino-cyclohexylmethylene)-succinic acid 4-benzyl ester 1-tert-butyl ester (243 mg, 0.51 mmol) and palladium (5% on charcoal) in ethanol (15 mL) was hydrogenated at 4 bar for 3 h. The catalyst was removed from the reaction mixture by filtration. The catalyst was washed with ethanol and the solution was concentrated under reduced pressure to give crude trans-2-(4-tert-Butoxycarbonylamino-cyclohexylmethyl)-succinic acid 1-tert-butyl ester (217 mg, >100%).

1. customThe catalyst was removed from the reaction mixture by filtration
2. washThe catalyst was washed with ethanol
3. concentrationthe solution was concentrated under reduced pressure