Hydrogen chloride-ethyl acetate → HCID 22405244, compound

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Reaction Steps

To a solution of 1-[(4-tert-butoxycarbonyl-1piperazinyl)carbonylmethyl]-5-{4-[2-(4-methylphenyl)benzoylamino]benzoyl}-1,3,4,5-tetrahydro-1,5-benzodiazepin-2(2H)-one (150 mg) in ethyl acetate (5 ml) was added 4N hydrogen chloride - ethyl acetate solution, and then the mixture was stirred at ambient temperature for 12 hours. The solvents were evaporated in vacuo and the residue was diluted with saturated aqueous sodium bicarbonate solution, and then the aqueous layer was extracted with ethyl acetate. Drying, filtering and the removal of solvents afforded a crude product. The crude product was chromatographed on silica gel (20% methanol in chloroform) to give 5-{4-[2-(4-methylphenyl)benzoylamino]benzoyl}-1-[(1-piperazinyl)carbonylmethyl]-1,3,4,5-tetrahydro-1,5-benzodiazepin-2(2H)-one (58 mg) as a white powder.

Provenance & Evidence