反应详情

温度

15 °C

A mixture of 15 ml of acetic anhydride and 50 ml of acetic acid was ice-cooled and thereto was added dropwise 10 ml of nitric acid (d=1.38). After stirring for 1 hour, thereto was added dropwise an acetic acid solution containing 10 g of 8-hydroxy-5-methyl-1,2,3,4,4a,9a-hexahydro-9-fluorenone in 100 ml of acetic acid. After stirring for 30 minutes, the ice bath was removed and the solution was warmed to an inner temperature of 15° C. To this solution was added 150 ml of diethyl ether, followed by stirring under ice-cooling. The resulting precipitate was collected by filtration to obtain 8 g of 8-hydroxy-5-methyl-7-nitro-1,2,3,4,4a,9a-hexahydro-9-fluorenone of yellowish green powdery crystal.

1. temperaturecooled
2. stirringAfter stirring for 30 minutes
3. customthe ice bath was removed
4. additionTo this solution was added 150 ml of diethyl ether
5. stirringby stirring under ice-
6. temperaturecooling
7. filtrationThe resulting precipitate was collected by filtration