申请人:Bayer Aktiengesellschaft
公开号:US04331613A1
公开(公告)日:1982-05-25
A process for the preparation of an optionally substituted trifluoromethyl-naphthalene which comprises contacting a compound of the formula ##STR1## in which R.sup.1 denotes hydrogen, alkyl, aralkyl, aryl, aryloxy, arylthio, polyhalogenoalkoxy, polyhalogenoalkylthio, halogen, nitro, halogenocarbonyl, halogenosulphonyl, alkylsulphonyl or arylsulphonyl, it being possible for the aromatic nuclei contained in the substituents R.sup.1 to be in turn substituted by halogen, alkyl, polyhalogenoalkoxy or polyhalogenoalkylthio, R.sup.2 represents hydrogen, halogen or alkyl and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 denote hydrogen, or R.sup.3 and R.sup.4 or R.sup.4 and R.sup.5 in each case together denote a fused-on aromatic ring, and wherein, in the case where R.sup.3 and R.sup.4 together form a fused-on aromatic ring, R.sup.5 and R.sup.6 independently of one another can also denote, in addition to hydrogen, halogen, nitro, halogenocarbonyl or halogenosulphonyl, and wherein, in the case where R.sup.4 and R.sup.5 together form a fused-on aromatic ring, R.sup.3 and R.sup.6 independently of one another can also denote, in addition to hydrogen, halogen, nitro, halogenocarbonyl or halogenosulphonyl, with carbon tetrachloride and hydrogen fluoride at a temperature of 70.degree. to 120.degree. C. and under a pressure of 5 to 30 bars the reaction product then optionally being treated with catalyst activated hydrogen.
制备一种可选取代的三氟甲基萘的过程,包括将式为##STR1##的化合物与四氯化碳和氢氟酸在70℃到120℃的温度和5到30巴的压力下接触反应,其中R.sup.1表示氢、烷基、芳基烷基、芳基、芳基氧基、芳基硫基、多卤代烷氧基、多卤代烷基硫基、卤素、硝基、卤代羰基、卤代磺酰基、烷基磺酰基或芳基磺酰基,其中所述取代基中的芳环可以再次取代为卤素、烷基、多卤代烷氧基或多卤代烷基硫基,R.sup.2表示氢、卤素或烷基,R.sup.3、R.sup.4、R.sup.5和R.sup.6表示氢,或者R.sup.3和R.sup.4或R.sup.4和R.sup.5分别一起表示融合的芳环,其中,在R.sup.3和R.sup.4一起形成融合的芳环的情况下,R.sup.5和R.sup.6也可以独立地表示除氢外的卤素、硝基、卤代羰基或卤代磺酰基,而在R.sup.4和R.sup.5一起形成融合的芳环的情况下,R.sup.3和R.sup.6也可以独立地表示除氢外的卤素、硝基、卤代羰基或卤代磺酰基,然后可选择地将反应产物与催化剂活化的氢处理。