申请人:Bayer Aktiengesellschaft
公开号:US04330366A1
公开(公告)日:1982-05-18
A process for the preparation of a halogenated benzoyl fluoride, which comprises contacting a halogenated benzotrifluoride of the formula ##STR1## in which m and n independently of one another represent an integer from 0 to 5, the sum of m and n being 5, with at least one sulphur compound of the formula ##STR2## in which X denotes fluorine, chlorine or hydroxyl and Y represents hydroxyl, or X and Y together denote an oxygen atom linked to the sulphur atom by a double bond, at an elevated temperature, and after reaction with the halogenated benzotrifluoride, removing the sulphur compound from the reaction mixture in the form of a compound of the formula ##STR3## in which X has the meaning given and Hal represents fluorine or chlorine, the reaction product is further reacted with potassium fluoride at an elevated temperature and under increased pressure.
一种制备卤代苯甲酰氟的方法,包括将式为##STR1##的卤代苯三氟化物与至少一种硫化合物接触,其中m和n分别独立地表示0到5的整数,m和n的和为5,所述硫化合物的式为##STR2##,其中X表示氟、氯或羟基,Y表示羟基,或者X和Y一起表示通过双键与硫原子连接的氧原子,在升高温度下反应后,从反应混合物中以##STR3##的化合物形式去除硫化合物,其中X具有给定的含义,Hal表示氟或氯,反应产物进一步在升高温度和增加压力下与氟化钾反应。