申请人:BASF Aktiengesellschaft
公开号:US05386042A1
公开(公告)日:1995-01-31
1,4-Diaminoanthraquinone-2,3-disulfonic acid (I) is prepared by reacting 1,4-diamino-2,3-dihaloanthraquinone (II) with boric acid in an inert organic solvent and further reacting the resulting reaction product (IIa) with an aqueous sulfite solution, by a method in which the inert organic solvent used is a nonpolar solvent having a boiling point of .gtoreq.130.degree. C. and a density of .ltoreq.0.95 g/cm.sup.3, and 1,4-diaminoanthraquinone-2,3-dinitrile (III) is prepared by reacting the 1,4-diaminoanthraquinone-2,3-disulfonic (I) with a cyanide.
1,4-二氨基蒽醌-2,3-二磺酸(I)是通过将1,4-二氨基-2,3-二卤代蒽醌(II)与硼酸在惰性有机溶剂中反应,并进一步将所得的反应产物(IIa)与亚硫酸盐水溶液反应制备而成。在该方法中,所使用的惰性有机溶剂为沸点大于或等于130℃,密度小于或等于0.95 g/cm3的非极性溶剂,且通过反应1,4-二氨基蒽醌-2,3-二磺酸(I)与氰化物制备1,4-二氨基蒽醌-2,3-二腈(III)。