发明名称 |
Preparation of 1,4-diaminoanthraquinone-2,3-disulfonic acid and 1,4-diaminoanthraquinone-2,3-dinitrile |
摘要 |
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 >/=130 DEG C. and a density of </=0.95 g/cm3, and 1,4-diaminoanthraquinone-2,3-dinitrile (III) is prepared by reacting the 1,4-diaminoanthraquinone-2,3-disulfonic (I) with a cyanide.
|
申请公布号 |
US5386042(A) |
申请公布日期 |
1995.01.31 |
申请号 |
US19930088740 |
申请日期 |
1993.07.08 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
DUST, MATTHIAS;BERGMANN, UDO;SCHWANTJE, GERD |
分类号 |
C07C253/00;C07C253/16;C07C255/58;C07C303/02;C07C303/04;C07C309/38;C07C309/53;C09B1/22;C09B1/24;(IPC1-7):C07C303/00 |
主分类号 |
C07C253/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|