HCID 54269052, compound → HCID 19607757, compound

Participants

Reaction Steps

To a solution of 5-acetyloxyimino-1-[4-(2-chlorobenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.48 g) in acetic acid (20 ml) is added platinum oxide (0.05 g) and the mixture is subjected to catalytic reduction under hydrogen atmosphere. After completion of the reaction, the catalyst is removed by filtration, and the filtrate is concentrated. The resulting residue is purified by silica gel column chromatography (eluent; dichloromethane:methanol=20:1→10:1), and recrystallized from ethanol/diethyl ether to give 5-amino-1-[4-(2-chlorobenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.19 g) as colorless prisms, m.p. 176°-178° C.

Provenance & Evidence