申请人:Bayer Aktiengesellschaft
公开号:US04533777A1
公开(公告)日:1985-08-06
A process for the preparation of an aromatic trifluoromethyl compound which comprises contacting an aromatic compound of the formula ##STR1## wherein R.sup.1 denotes hydrogen, alkyl, aryl, aralkyl, aryloxy, arylthio, polyhalogenoalkoxy or polyhalogenoalkylthio and the aromatic substituents R.sup.1 can in turn be substituted by halogen, alkyl, polyhalogenoalkyl, polyhalogenoalkoxy, polyhalogenoalkylthio, nitro, chlorocarbonyl or chlorosulfonyl, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently hydrogen, halogen or alkyl and two adjacent radicals of the group R.sup.1 to R.sup.5 can conjointly form a three-membered to five-membered alkylene radical, with carbon tetrachloride and hydrogen fluoride at a temperature in the range of 50.degree. C. to 140.degree. C. Certain new aromatic trifluoromethyl compounds which can prepared by such a process are also disclosed.
一种制备芳基三氟甲基化合物的方法,包括将具有以下结构的芳基化合物与四氯化碳和氢氟酸接触,其中R.sup.1表示氢、烷基、芳基、芳基烷基、芳基氧基、芳基硫基、多卤代烷氧基或多卤代烷硫基,且芳基取代基R.sup.1可以进一步被卤素、烷基、多卤代烷基、多卤代烷氧基、多卤代烷硫基、硝基、氯代羰基或氯代磺酰基取代;R.sup.2、R.sup.3、R.sup.4和R.sup.5分别为氢、卤素或烷基,且R.sup.1至R.sup.5组中相邻的两个基可共同形成三元至五元的烷基基团,反应温度在50°C至140°C范围内。该方法还公开了可由此类方法制备的某些新芳基三氟甲基化合物。