Method for producing anthraquinone compounds
    1.
    发明授权
    Method for producing anthraquinone compounds 失效
    蒽醌化合物的制备方法

    公开(公告)号:US4784806A

    公开(公告)日:1988-11-15

    申请号:US938250

    申请日:1986-12-05

    CPC分类号: C09B1/22

    摘要: Anthraquinone compounds of the formula, ##STR1## wherein R is hydrogen, alkyl or cycloalkyl, which are useful as intermediates for disperse dyes and as sublimable dyes for thermal transfer recording, are prepared by allowing the compound of the formula, ##STR2## wherein X is hydrogen or sulfonic acid group, to react with a cyanogenating agent in an aqueous medium in the presence of a compound, such as polyalkylene glycols.

    摘要翻译: 其中R为氢的烷基或环烷基的蒽醌化合物,其可用作分散染料的中间体和用作热转印记录的升华性染料,通过使下式的化合物,其中X 是氢或磺酸基团,在化合物如聚亚烷基二醇的存在下,在水性介质中与氰化剂反应。

    Process for preparing 1,4-diaminoanthraquinone-2,3-disubstituted compound
    2.
    发明授权
    Process for preparing 1,4-diaminoanthraquinone-2,3-disubstituted compound 失效
    1,4-二氨基蒽醌-2,3-二取代化合物的制备方法

    公开(公告)号:US4749521A

    公开(公告)日:1988-06-07

    申请号:US867

    申请日:1987-01-06

    CPC分类号: C09B1/24

    摘要: 1,4-Diaminoanthraquinone-2,3-disulfonic acid or salt thereof and 1,4-diaminoanthraquinone-2,3-dinitrile which are intermediate of anthraquinone dyes are economically prepared by allowing 1,4-diamino-2,3-dihalogenoanthraquinone to react with alkalimetal sulfite in aqueous solution in the presence of quaternary ammonium or phosphonium compound, while water is being removed, to obtain 1,4-diaminoanthraquinone-2,3-disulfonic acid or salt thereof and, if necessary, cyanogenating the reaction mixture above without removing the disulfonic acid or salt thereof produced above to obtain 1,4-diaminoanthraquinone-2,3-dinitrile. The quaternary ammonium or phosphonium compound is recovered from and re-used for the reactions above.

    摘要翻译: 作为蒽醌染料中间体的1,4-二氨基蒽醌-2,3-二磺酸或其盐和1,4-二氨基蒽醌-2,3-二腈经济地通过使1,4-二氨基-2,3-二卤代蒽醌 在季铵或鏻化合物的存在下,与水中的碱金属亚硫酸盐反应,同时除去水,得到1,4-二氨基蒽醌-2,3-二磺酸或其盐,如果需要,将上述反应混合物氰化 而不除去上述制备的二磺酸或其盐,得到1,4-二氨基蒽醌-2,3-二腈。 季铵或鏻化合物从上述反应中回收并重新用于上述反应。