PROCESS FOR PRODUCING FLUORINE COMPOUND
    2.
    发明公开
    PROCESS FOR PRODUCING FLUORINE COMPOUND 有权
    VERFAHREN ZUR HERSTELLUNG VON FLUORINVERBINDUNGEN

    公开(公告)号:EP1364938A4

    公开(公告)日:2005-01-19

    申请号:EP02710438

    申请日:2002-01-31

    摘要: A method of synthesizing in a high yield the target fluorine compound having a geminal-difluoro structure by subjecting an easily available carbonyl compound to a two-stage reaction. A compound (1) such as ethyl 4-oxocyclohexanecarboxylate is reacted with either a compound represented by the formula X-Z, such as phosphorus pentachloride, or a compound represented by the formula Z2O (wherein Z is a monovalent group which gives a leaving group of the structure -OZ; and X is chlorine, bromine, or iodine). Subsequently, a fluorinating agent which generates a fluorine anion, such as HF, is caused to act on the reaction product to obtain a fluorine compound (2) such as ethyl 4,4-difluorocyclohexanecarboxylate.

    摘要翻译: 通过使容易获得的羰基化合物进行两阶段反应,以高收率合成具有偕 - 二氟结构的目标氟化合物的方法。 使诸如4-氧代环己烷羧酸乙酯的化合物(1)与由式XZ表示的化合物如五氯化磷或由式Z2O表示的化合物反应(其中Z是给出该化合物的离去基团的一价基团 结构-OZ;并且X是氯,溴或碘)。 随后,使产生HF等氟阴离子的氟化剂作用于反应生成物,得到4,4-二氟环己烷羧酸乙酯等氟化合物(2)。