| 摘要 |
PURPOSE:To obtain the titled compound, used as a coloring material, and useful as a synthetic intermediate for dyes and pigments in high purity and yield, by reacting 1-aminoanthraquinone with an alkyl halide in the presence of an alkali in sulfolane. CONSTITUTION:1-Aminoanthraquinone is reacted with an alkyl halide in the presence of an alkali (a hydroxide, carbonate or bicarbonate of an alkali metal or alkaline earth metal, particularly caustic potash) in sulfolane at 0-150 deg.C, preferably 20-100 deg.C to give the aimed 1-alkylaminoanthraquinone of the formula (R is alkyl which may be substituted). Preferably, the reaction molar ratio between the 1-aminoanthraquinone and the alkyl halide is 1:1-3, and the molar amount of the sulfolane to be used is 2-10 times that of the 1-aminoanthraquinone.
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