反应详情

A solution of [1-amino-1-(4-{[(R)-2-ethoxy-2-(2-fluoro-4-methoxy-phenyl)-acetylamino]-methyl}-phenyl)-meth-(E)-ylidene]-carbamic acid benzyl ester (195 mg) in EtOH (20 ml) was treated with HOAc (0.05 ml) and Pd/C 10% (20 mg) and hydrogenated over night at normal pressure. The catalyst was filtered off, the filtrate was concentrated to give (R)-N-(4-carbamimidoyl-benzyl)-2-ethoxy-2-(2-fluoro-4-methoxy-phenyl)-acetamide acetate (151 mg, 96.3% ee) as white solid.

1. filtrationThe catalyst was filtered off
2. concentrationthe filtrate was concentrated