申请人:BASF Aktiengesellschaft
公开号:US05151548A1
公开(公告)日:1992-09-29
Benzene derivatives of the general formula ##STR1## where Hal is halogen, R.sup.1 is a hydrocarbon radical of 1 to 18 carbon atoms, R.sup.2 is hydrogen or alkyl of 1 to 6 carbon atoms and X is hydrogen or halogen, are prepared by a process in which a toluene derivative of the general formula ##STR2## is electrochemically oxidized in the presence of an acid of the formula R.sup.2 --COOH (III). Novel benzene derivatives of the general formula ##STR3## where R.sup.3 is hydrogen or an R.sup.2 --CO-- radical but R.sup.1 cannot be methyl if X is hydrogen, and of the general formula ##STR4## where R.sup.4 is a branched or cyclic alkyl radical of 3 to 12 carbon atoms, but R.sup.4 cannot be isopropyl if X is hydrogen. The compounds of formulas IV and VI are intermediates for crop protecting agents, e.g. pyrethroids.
通式为 ##STR1## 的苯衍生物,其中Hal是卤素,R.sup.1是1至18个碳原子的碳氢基团,R.sup.2是氢或1至6个碳原子的烷基,X是氢或卤素,通过一种方法制备,其中在式III的酸的存在下,通式为 ##STR2## 的甲苯衍生物在电化学氧化的条件下制备。通式为 ##STR3## 的新型苯衍生物,其中R.sup.3是氢或R.sup.2 --CO--基团,但如果X是氢,则R.sup.1不能是甲基。通式为 ##STR4## 的新型苯衍生物,其中R.sup.4是3至12个碳原子的支链或环烷基团,但如果X是氢,则R.sup.4不能是异丙基。公式IV和VI的化合物是作物保护剂(例如拟除虫菊酯)的中间体。