反应详情

10 g (50 mmol) of ethyl 2-methyl-3-oxa-2,7-diazabicyclo[3.3.0]octane-7-carboxylate (Example H d)) are hydrogenated in 200 ml of ethanol on 3 g of Pd-on-active charcoal (10% of Pd) at 50° C. under 50 bar. The catalyst is filtered off, the filtrate is concentrated and the residue is distilled.

1. filtrationThe catalyst is filtered off
2. concentrationthe filtrate is concentrated
3. distillationthe residue is distilled