Fluorine-containing acetophenones, optionally halogenated on the CH.sub.3 group, of the formula ##STR1## in which X represents hydrogen, chlorine or bromine and the radicals R.sub.1 to R.sub.5 have the following meaning, a) R.sub.1 and R.sub.4 denote fluorine, R.sub.2 and R.sub.5 denote chlorine and R.sub.3 denotes CF.sub.3, or b) R.sub.1, R.sub.3 and R.sub.4 denote fluorine and R.sub.2 and R.sub.5 denote hydrogen, or c) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen, R.sub.2 denotes chlorine and R.sub.3 denotes CF.sub.3, or d) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen, R.sub.2 denotes chlorine and R.sub.3 denotes OCF.sub.3, or e) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen and R.sub.2 and R.sub.3 denote CF.sub.3, or f) R.sub.1 denotes chlorine, R.sub.2 denotes CF.sub.3 and R.sub.3, R.sub.4 and R.sub.5 denote hydrogen, or g) R.sub.1 denotes chlorine, R.sub.2, R.sub.3 and R.sub.4 denote hydrogen and R.sub.5 denotes CF.sub.3, or h) R.sub.1 denotes chlorine, R.sub.2, R.sub.4 and R.sub.5 denote hydrogen and R.sub.3 denotes CF.sub.3 and a process for their preparation from the corresponding fluorinated benzonitriles or benzyl halides by reaction with an organomagnesium compound capable of introducing methyl groups and subsequent hydrolysis, if appropriate followed by a chlorination or bromination.
含
氟基的
苯乙酮,可选在CH.sub.3基上卤素化,其
化学式为##STR1## 其中X代表氢、
氯或
溴,基团R.sub.1到R.sub.5的含义如下:a)R.sub.1和R.sub.4表示
氟,R.sub.2和R.sub.5表示
氯,R.sub.3表示CF.sub.3,或b)R.sub.1、R.sub.3和R.sub.4表示
氟,R.sub.2和R.sub.5表示氢,或c)R.sub.1、R.sub.4和R.sub.5表示氢,R.sub.2表示
氯,R.sub.3表示CF.sub.3,或d)R.sub.1、R.sub.4和R.sub.5表示氢,R.sub.2表示
氯,R.sub.3表示OCF.sub.3,或e)R.sub.1、R.sub.4和R.sub.5表示氢,R.sub.2和R.sub.3表示CF.sub.3,或f)R.sub.1表示
氯,R.sub.2表示CF.sub.3,R.sub.3、R.sub.4和R.sub.5表示氢,或g)R.sub.1表示
氯,R.sub.2、R.sub.3和R.sub.4表示氢,R.sub.5表示CF.sub.3,或h)R.sub.1表示
氯,R.sub.2、R.sub.4和R.sub.5表示氢,R.sub.3表示CF.sub.3,以及从相应的含
氟苯甲腈或苄基卤化物通过与能引入甲基基团的
有机镁化合物反应,随后
水解,如有必要,可进行
氯化或
溴化的制备过程。