HCID 22405144, compound → HCID 22405176, compound

Participants

Reaction Steps

A solution of 5-(3-benzyloxy-4-nitrobenzoyl)-1-ethoxycarbonylmethyl-1,3,4,5-tetrahydro-1,5-benzodiazepin-2(2H)-one (2.2 g), 10% palladium on carbon (220 mg) in ethanol (30 ml) and 1,4-dioxane (15 ml) was stirred under 4 atmospheric pressure of hydrogen at ambient temperature for 7 hours. The reaction mixture was filtered through a bed of celite, concentrated and purified by silica gel column chromatography (SiO2 60 g, ethyl acetate:n-hexane =2:1) to give 5-(4-amino-3-hydroxybenzoyl)-1-ethoxycarbonylmethyl-1,3,4,5-tetrahydro-1,5-benzodiazepin-2(2H)-one (1.5 g).

Provenance & Evidence