反应详情

A mixture of 1.84 g (5 mmol) of (S)-1-[(8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-1-yl)carbonyl]imidazole, 0.56 g (6 mmol) of phenol, 0.83 g (6 mmol) of powdered potassium carbonate and 20 ml of dry dimethylformamide is stirred at room temperature for 26 hours, then poured into 100 ml of water and extracted three times with chloroform. The chloroform solution is washed twice with water and three times with saturated sodium chloride solution, dried over magnesium sulphate and evaporated. The crude product is purified by chromatography on silica gel while eluting with ethyl acetate and recrystallization from ethyl acetate. There is obtained phenyl (S)-8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate of melting point 211°-212°.

1. extractionextracted three times with chloroform
2. washThe chloroform solution is washed twice with water and three times with saturated sodium chloride solution
3. dry with materialdried over magnesium sulphate
4. customevaporated
5. customThe crude product is purified by chromatography on silica gel
6. washwhile eluting with ethyl acetate and recrystallization from ethyl acetate