反应详情

3.5 g (10 mmol) of (S)-8-chloro-11,12,13,13a-tetrahydro-N-(2-propynyl)-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxamide, 30 mg of mercury (II) acetate and 20 ml of glacial acetic acid are heated to reflux for 5 hours. The solution obtained is then poured into water and extracted three times with methylene chloride. The combined organic phases are dried over magnesium sulphate and evaporated. The residue is chromatographed on silica gel while eluting with methylene chloride and 10% methanol and there is obtained (S)-8-chloro-11,12,13,13a-tetrahydro-1-(5-methyl-2-oxazolyl)-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one of melting point 228°-230°.

1. temperatureto reflux for 5 hours
2. customThe solution obtained
3. extractionextracted three times with methylene chloride
4. dry with materialThe combined organic phases are dried over magnesium sulphate
5. customevaporated
6. customThe residue is chromatographed on silica gel
7. washwhile eluting with methylene chloride and 10% methanol