Process for the preparation of 2-arylamino-4,6-dichloro-s-triazines
    1.
    发明授权
    Process for the preparation of 2-arylamino-4,6-dichloro-s-triazines 失效
    制备2-芳基氨基-4,6-二氯-s-三嗪的方法

    公开(公告)号:US4683308A

    公开(公告)日:1987-07-28

    申请号:US820510

    申请日:1986-01-21

    摘要: In the preparation of a 2-arylamino-4,6-dichloro-s-triazine of the formula ##STR1## in which R.sup.1 is an optionally substituted aryl radical, andR.sup.2 is hydrogen or alkyl,by reacting cyanuric chloride of the formula ##STR2## with a virtually water-insoluble arylamine of the formula ##STR3## at a temperature between 0.degree. and 100.degree. C., the improvement which comprises effecting the reaction in water at an acid pH in the presence of a virtually water-insoluble organic solvent. The resulting aqueous phase contains the triazine in such high purity and concentration that it can be used without further purification. The organic solvent can be recycled.

    摘要翻译: 在制备式“IMAGE”的2-芳基氨基-4,6-二氯-s-三嗪的方法中,其中R 1是任选取代的芳基,R 2是氢或烷基,通过式 >在0℃至100℃的温度下具有式(IMAGE)的几乎不溶于水的芳基胺,其改进包括在几乎不溶于水的有机溶剂存在下,在酸性pH下进行水中的反应 。 所得水相含有如此高纯度和浓度的三嗪,其可以不经进一步纯化而使用。 有机溶剂可循环利用。