HCID 20244812, compound → HCID 20244746, compound

Participants

Reaction Steps

A solution of ethyl 2-t-butyloxycarbonylamino-4-(o-nitrophenyl)butyrate (13.0 g) in ethanol (300 ml) is hydrogenated at room temperature and atmospheric pressure, using 10% palladium on charcoal (1 g) as catalyst, until uptake ceases. The catalyst is filtered off. Evaporation of the solvent gives ethyl t-butyloxycarbonylamino-4-(o-aminophenyl)butyrate which is used without further purification for the next step.

Provenance & Evidence