Nitric Acid → 8-Hydroxy-5-methyl-7-nitro-1,2,3,4,4a,9a-hexahydro-9-fluorenone

Participants

Reaction Conditions

Reaction Steps

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.

Provenance & Evidence