反应详情

8 g of tetrabutyl ortho-titanate are added to a solution of 116 g (0.72 mol) of (S)-1-(4-chlorophenyl)-ethylamine (65% ee) and 114.5 g (0.727 mol) of 4-chloroacetophenone in 500 ml of toluene at room temperature with stirring, and the mixture is then refluxed for 6 hours at the water separator. The reaction mixture is filtered, and the filtrate is evaporated under reduced pressure to give 191.3 g (91% of theory) of (S)-[1-(4-chlorophenyl)-ethyl]-[1-(4-chlorophenyl)-ethylidene]-amine.

1. filtrationThe reaction mixture is filtered
2. customthe filtrate is evaporated under reduced pressure