反应详情

Ethyl 3-benzoylacrylate (13a) (55.6 g, 250 mmoles) is dropped into a solution of (3S)-3-amino-1-t-butoxycarbonylmethyl-2,3,4,5-tetrahydro-1H-benzazepin-2-one (11) (66.2 g, 227 mmoles) in 200 ml of toluene, at room temperature in 1 h. The resulting mixture is left under stirring for 18 h, then added with 10% Pd—C (26 g, 22 mmoles) and hydrogenated at 3 atm for 18 h at room temperature. After completion of the reaction, the catalyst is filtered off, 50 ml of acetic acid are added and volatiles are distilled off at 110–120° C. inner temperature.

1. waitThe resulting mixture is left
2. customAfter completion of the reaction
3. filtrationthe catalyst is filtered off
4. addition50 ml of acetic acid are added
5. distillationvolatiles are distilled off at 110–120° C. inner temperature