Hydrazine hydrate (1:1) → HCID 19607839, compound

Participants

Reaction Steps

A mixture of 1-{4-[2-[6-phthalimidohexyloxy)benzoylamino]benzoyl}-2,3,4,5-tetrahydro-1H-benzazepine (3.75 g), hydrazine hydrate (0.44 ml) and ethanol (30 ml) is refluxed for 3.5 hours. The precipitated crystal is collected by filtration, dried and purified by silica gel column chromatography (eluent; chloroform:methanol:aqueous ammonia=100:10:1), and recrystallized from methanol/diethyl ether to give 1-{4-[2-(6-aminohexyloxy)benzoylamino]benzoyl}-2,3,4,5-tetrahydro-1H-benzazepine (2.52 g) as white powder, m.p. 135.5°-137.5° C.

Provenance & Evidence