Selective halogenation of benzene di and tri-methanol compounds
    2.
    发明授权
    Selective halogenation of benzene di and tri-methanol compounds 失效
    苯二和三甲醇化合物的选择性卤化

    公开(公告)号:US4590308A

    公开(公告)日:1986-05-20

    申请号:US694161

    申请日:1985-01-23

    CPC分类号: C07C29/62

    摘要: Process for the monohalogenation of a benzene compound which has 2 or 3 CH.sub.2 OH substituents to obtain a product wherein one of the CH.sub.2 OH substituents is monohalogenated which comprises reacting an aqueous solution of the compound with hydrochloric or hydrobromic acid in the presence of a water immiscible organic solvent which is inert to the reactants, the partition coefficient of the compound in the aqueous/organic phases being greater, with respect to the aqueous phase, than the partition coefficient of the product. The novel compounds4-chloromethyl-2,3,5,6-tetrafluorobenzene methanol and4-bromomethyl-2,3,5,6-tetrafluorobenzene methanol are also disclosed.

    摘要翻译: 具有2或3个CH 2 OH取代基的苯化合物的单卤化方法,以获得其中一个CH 2 OH取代基被单卤代的产物,其中包括使化合物的水溶液与盐酸或氢溴酸在水不混溶的有机溶剂存在下反应 对反应物是惰性的,化合物在水相/有机相中的分配系数相对于水相比分配系数大。 还公开了新化合物4-氯甲基-2,3,5,6-四氟苯甲醇和4-溴甲基-2,3,5,6-四氟苯甲醇。