申请人:BASF Aktiengesellschaft
公开号:US03968131A1
公开(公告)日:1976-07-06
An improvement in the process for the manufacture of 1-amino-2-alkoxy-4-hydroxyanthraquinones by reaction of primary, saturated, linear or branched aliphatic alcohols, which may contain further substituents, with 1-amino-2-phenoxy-4-hydroxyanthraquinone or 1-amino-2-methoxy-4-hydroxyanthraquinone in the presence of alkaline reagents, which consists in carrying out the reaction in the presence of polyethylene glycols of molecular weight above 150. The presence of the polyethylene glycol facilitates the reaction and as a result high yields of reaction product are obtained even with alcohols which react incompletely, if at all, in prior processes.
一种改进的方法用于通过在碱性试剂存在下,将含有进一步取代基的一次饱和的直链或支链脂肪醇与1-氨基-2-苯氧基-4-羟基蒽醌或1-氨基-2-甲氧基-4-羟基蒽醌反应制备1-氨基-2-烷氧基-4-羟基蒽醌。该方法的特点在于在分子量高于150的聚乙二醇存在下进行反应。聚乙二醇的存在有助于促进反应,从而即使在以前的方法中反应不完全的醇也能获得高产率的反应产物。