申请人:Hoechst Aktiengesellschaft
公开号:US04920212A1
公开(公告)日:1990-04-24
The present invention relates to a process for the preparation of compounds of the formula I ##STR1## in which R.sup.1 denotes H, halogen, (C.sub.1 -C.sub.4)-alkyl or (C.sub.1 -C.sub.4)-alkoxy and R.sup.2 denotes H, halogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-alkyl-thio, (C.sub.1 -C.sub.4)-alkoxy or the bivalent group 3,4-0-CH.sub.2 -O, comprising reacting a compound of the formula II ##STR2## in which X denotes halogen and R.sup.2 has the meaning as in formula I, in the presence of a copper catalyst with an alkali metal phenolate or alkaline earth metal phenolate of the formula III ##STR3## in which M denotes an alkali metal or an alkaline earth metal and R.sup.1 has the meaning as in formula I.
本发明涉及一种制备公式I的化合物的方法,其中R1表示H、卤素、(C1-C4)烷基或(C1-C4)烷氧基,R2表示H、卤素、(C1-C4)烷基、(C1-C4)烷基硫代基、(C1-C4)烷氧基或二价基团3,4-0-CH2-O。该方法包括在存在铜催化剂的情况下,将公式II的化合物与公式III的碱金属苯酚或碱土金属苯酚反应,其中X表示卤素,R2的含义与公式I中相同,M表示碱金属或碱土金属,R1的含义与公式I中相同。