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发明公开
CN102219704A 一种合成1，4-二氨基-2，3-二氯蒽醌的改进方法 有权 转让

一种合成1，4-二氨基-2，3-二氯蒽醌的改进方法
摘要：
本发明涉及一种合成1，4-二氨基-2，3-二氯蒽醌的改进方法，以1，4-二氨基蒽醌隐色体为原料，其特征在于，将1，4-二氨基蒽醌隐色体溶解在溶剂四氯化碳或四氯乙烯中，在25～30℃，通入氯气对1，4-二氨基蒽醌隐色体进行氯化制得1，4-二氨基-2，3-二氯蒽醌，其中1，4-二氨基蒽醌隐色体：溶剂：氯气的质量比为1：6～12：0.6～1.2；通入氯气的速度为0.5～5.5mg/s，通入氯气时间至少8h。本发明确定的氯化条件及各种原料的配比特别恰当，利于提高收率，其收率95%左右，液相色谱含量至少89%，选用四氯化碳或四氯乙烯作溶剂可以降低能耗，采用氯气作氯化剂降低原料价格且易于回收利用。
摘要（英）：

The invention relates to an improved method for synthesizing 1,4-diamino-2,3-dichloroanthraquinone. 1,4-diamino-anthraquinone leuco compounds are used as a raw material and the method is characterized by comprising the following steps of: dissolving the 1,4-diamino-anthraquinone leuco compounds in a solvent of carbon tetrachloride or perchlorethylene, and introducing chlorine gas to chloridize the 1,4-diamino-anthraquinone leuco compounds at the temperature of between 25 and 30 DEG C to obtain the 1,4-diamino-2,3-dichloroanthraquinone, wherein a mass ratio of the 1,4-diamino-anthraquinone leuco compounds to the solvent to the chlorine gas is 1:(6-12):(0.6-1.2), the speed of introducing the chlorine gas is 0.5 to 5.5mg/s, and the time of introducing the chlorine gas is at least 8 hours. The determined chlorinating condition and a proportion of various raw materials are quite proper, so that the yield is improved and is about 95 percent, and the content is at least 89 percent through liquid chromatogram; by using the carbon tetrachloride or perchlorethylene as the solvent, the energy consumption can be lowered; and by using the chlorine gas as a chlorating agent, the price of the raw material is reduced, and the raw material can be easily recycled.

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