申请人:Sandoz Ltd.
公开号:US04016182A1
公开(公告)日:1977-04-05
The present invention concerns a novel process for the reduction of a nitro-anthraquinone compound of formula I: ##STR1## wherein M IS AN INTEGER 1, 2 OR 3, AND n is an integer 1, 2 or 3, The sum of m + n being 3, 4 or 5, and the rings A and B are either further substituted or unsubstituted, To the corresponding amino-anthraquinone compound which comprises reacting the compound of formula I with hydrazine in aqueous medium. The resulting amino-anthraquinone compounds are in general known and are useful intermediates in the production of anthraquinone dyestuffs.
本发明涉及一种新颖的还原硝基蒽醌化合物的方法,该化合物的化学式为I:##STR1## 其中M是1、2或3的整数,n是1、2或3的整数,m + n的总和为3、4或5,环A和B可以进一步取代或未取代。该方法包括在水介质中将化合物I与肼反应,得到相应的氨基蒽醌化合物。所得的氨基蒽醌化合物通常已知,并且是生产蒽醌染料的有用中间体。