CAS: 632-83-7; 1-Bromoanthracene-9,10-Dione

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1-氯蒽醌置于硝基苯,Copper Dichloride体系中,化学反应生成 1-溴蒽醌
参考文献:De597259
标题:De597259

专利信息

专利号:US-4543214-A
优先权日:1983-06-23
标 题 :Process for the preparation of bromoanthraquinones
发明人：SOMLO TIBOR; REGLI JOHANN
权利人:CIBA GEIGY AG
摘要:A process for the preparation of pure bromoanthraquinones by denitrobrominating corresponding nitroanthraquinones is described. The process comprises treating nitroanthraquinones of the formula I ##STR1## wherein X is hydroxy, mercapto, carboxy or halogen and m is 1, 2, 3 or 4 and n is 1 or 2, in the temperature range from 200° to 350° C. n Bromoanthraquinones of more than 95% purity are valuable starting materials for dye synthesis and can be used directly without further purification.