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Seigle and Hass, J. Org. Chem., 5, 100(1940), reported the reaction of the sodium salt of nitrocyclohexane with 2-bromo-2-nitropropane to give 1-(1-methyl-1-nitroethyl)-1-nitrocyclohexane. From the sodium salt of 2-nitropropane and 2-bromo-2-nitropropane they obtained 2,3-dimethyl-2,3-dinitrobutane. Other compounds prepared in like manner were 2,3-dimethyl-2,3-dinitropentane and 3,4-dimethyl-3,4-dinitrohexane. The method is limited to the preparation of α,β-dinitro compounds, and only low yields were reported.