| 摘要 |
1, 2-Cycloalkane-diones are prepared by treating 1-oxo-2-nitratocycloalkane with a strong base in an aqueous medium at a temperature of 20 DEG -25 DEG C. The 1-oxo-2-nitratocycloalkane may be dispersed in an alkaline medium with agitation, preferably with a dispersing agent. The diones may be recovered by salting the solution and extracting with methyl isobutyl ketone or an alkyl ether, the alkyl group having less than 5 carbon atoms or preferably by formation of the 1, 2-cycloalkane-dione dioxime which can be purified and hydrolysed by conventional methods. 1-Oxo-2-nitratocyclohexane may be prepared by reaction of a cyclohexene with nitrogen dioxide. Specification 974,151 is referred to.
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