Process for preparing 4,6-dinitroresorcinol
    308.
    发明授权
    Process for preparing 4,6-dinitroresorcinol 失效
    制备4,6-二硝基间苯二酚的方法

    公开(公告)号:US4745232A

    公开(公告)日:1988-05-17

    申请号:US1243

    申请日:1987-01-07

    CPC classification number: C07C201/08

    Abstract: A method of nitrating resorcinol which is selective for the production of the 4,6-dinitro resorcinal isomer. A resorcinol-based starting material is admixed with a nitrating solution from which substantially all nitrogen dioxide and nitrous has been removed. The nitrating solution contains white fuming nitric acid, a nitrosonium ion control agent such as urea, and, optionally, concentrated sulfuric acid. The 4,6-dinitroresorcinal isomer is provided in yields of about 65-85% with minimal production of undesirable side products.

    Abstract translation: 一种硝化间苯二酚的方法,间苯二酚对于生产4,6-二硝基间苯二酚异构体是有选择性的。 将基于间苯二酚的原料与硝化溶液混合,从其中除去基本上所有的二氧化氮和亚硝酸。 硝化溶液含有白色发烟硝酸,硝基鎓离子控制剂如尿素,以及任选的浓硫酸。 提供的4,6-二硝基间苯二酚异构体的产率约为65-85%,同时产生不希望的副产物。

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