Process for preparing fluorine-containing dicarbonyl compound
    8.
    发明授权
    Process for preparing fluorine-containing dicarbonyl compound 失效
    含氟二羰基化合物的制备方法

    公开(公告)号:US5569778A

    公开(公告)日:1996-10-29

    申请号:US428133

    申请日:1995-04-28

    摘要: A process for preparing a fluorine-containing dicarbonyl compound of the formula: R.sup.1 COCFR.sup.2 COR.sup.3 in which R.sup.1 is a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group; R.sup.2 is a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl or aryl group; and R.sup.3 is a hydrogen atom, or a substituted or unsubstituted alkyl, aryl, alkoxy or aryloxy group, provided that at least two of R.sup.1, R.sup.2 and R.sup.3 may together form a part of a cyclic structure with or without a hetero atom, by reacting a dicarbonyl compound of the formula: R.sup.1 COCHR.sup.2 COR.sup.3 in which R.sup.1, R.sup.2 and R.sup.3 are the same as defined above with fluorine (F.sub.2) in at least one solvent selected from the group consisting of halogenated hydrocarbons having 1 to 5 carbon atoms and nitrile compounds, or in a solvent in the presence of a salt, or an acid having pKa of 6 or less.By the above process, the fluorine-containing dicarbonyl compound is industrially prepared in a high yield.

    摘要翻译: PCT No.PCT / JP93 / 01584第 371日期:1995年4月28日 102(e)日期1995年4月28日PCT 1993年11月1日PCT公布。 第WO94 / 10120 PCT公开 日期:1994年5月11日制备下式的含氟二羰基化合物的方法:R1COCFR2COR3,其中R1是氢原子或取代或未取代的烷基或芳基; R2是氢原子,卤素原子或取代或未取代的烷基或芳基; 并且R 3是氢原子或取代或未取代的烷基,芳基,烷氧基或芳氧基,条件是R 1,R 2和R 3中的至少两个可以一起形成具有或不具有杂原子的环状结构的一部分, 一种下式的二羰基化合物:R1COCHR2COR3,其中R1,R2和R3与上述定义相同,在至少一种选自碳原子数为1〜5的卤代烃和腈化合物的溶剂中使用氟(F2),或 在溶剂中,在盐的存在下,或pKa为6以下的酸。 通过上述方法,可以高产率工业上制备含氟二羰基化合物。