Abstract
Four reaction products produced in the color reaction of m-dinitrobenzene with potassium cyanide were separated by a chromatographic technique with alumina. Two of them were determined as 2-ethoxy-6-nitrobenzonitrile and 4, 6-diethoxy-2, 3-benzenedicarbonitrile respectively. Remaining two substances were the main parts of the coloring matters, and their structures were presented as 2, 3-dihydro-4-nitro-3-oxo-1H-indazole-7-carbonitrile or 2, 3-dihydro-6-nitro-3-oxo-1H-indazole-7-carbonitrile and 2, 3-dihydro-6-nitro-3-oxo-1H-indazole-5-carbonitrile respectively. The reaction mechanism was also discussed.
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