Process for producing 2-methoxybenzanthrones
    2.
    发明授权
    Process for producing 2-methoxybenzanthrones 失效
    2-甲氧基苄基蒽的制备方法

    公开(公告)号:US4414156A

    公开(公告)日:1983-11-08

    申请号:US310577

    申请日:1981-10-09

    CPC分类号: C07C49/83 C09B3/04

    摘要: The invention relates to a novel process for producing 2-methoxybenzanthrones, starting with 1-aminoanthraquinones, which process is characterized in that, by application of a special reaction medium, namely a dimethylalkanephosphonate, which at the same time acts as a methylation agent in one of the reaction steps, the reaction is performed from beginning to end according to the principle of the single-vessel reaction, that is to say, without isolation of intermediates.The 2-methoxybenzanthrones obtained by this process are important intermediate products for vat dyes.

    摘要翻译: 本发明涉及一种从1-氨基蒽醌开始制备2-甲氧基苄基蒽的新方法,该方法的特征在于通过应用特殊的反应介质,即二甲基烷基膦酸盐,其同时作为甲基化剂在一个 的反应步骤,根据单容器反应的原理,也就是说,不分离中间体,从头到尾进行反应。 通过该方法获得的2-甲氧基苄基蒽是用于还原染料的重要的中间产物。