反应详情

A solution of bicyclo[2.2.2]octane-2,3dicarboxylic anhydride (3 g; 16.6 mmol) in tetrahydrofuran (9 ml) was dropwise added to a mixture of 29% aqueous ammonia (6 g; 83 mmol) in water (18 ml) while ice-cooling, and the resultant mixture was heated. The solvent was removed under atmospheric pressure, and acetic anhydride (10 ml) was added thereto, followed by refluxing for 30 minutes. The solvent was removed under reduced pressure, and the residue was combined with toluene (24 ml) and heated to dissolve. After cooling, the precipitated crystals were collected by filtration to give the objective compound. M.P., 199°-200° C.

1. temperaturecooling
2. customThe solvent was removed under atmospheric pressure, and acetic anhydride (10 ml)
3. additionwas added
4. temperatureby refluxing for 30 minutes
5. customThe solvent was removed under reduced pressure
6. temperatureheated to dissolve
7. temperatureAfter cooling
8. filtrationthe precipitated crystals were collected by filtration
9. customto give the objective compound
10. customM.P., 199°-200° C.