申请人:Bayer Aktiengesellschaft
公开号:US04450308A1
公开(公告)日:1984-05-22
New process for the preparation of known trifluoromethylphenyl oxyphenyl ether compounds of the formula ##STR1## wherein X stands for fluorine, chlorine or bromine and R for moieties, substituted if desired, of the series alkyl, alkenyl and alkinyl, by reacting 1,2-dihalogen-4-trifluoromethylbenzenes of the formula ##STR2## in which X and X.sup.1 independently of one another stand for fluorine, chlorine or bromine, with phenols of the formula ##STR3## in which R has the meaning given above, and basic alkali or alkaline earth compounds or with the salts formed from the phenols of formula (III) and the basic alkali or alkaline earth compounds, in the presence of diluents at temperatures between 60.degree. and 120.degree. C. The compounds of the formula (I) are intermediates for the synthesis of herbicides.
用一种新的方法制备已知的三氟甲基苯氧苯醚类化合物,其化学式为##STR1## 其中X代表氟、氯或溴,R代表取代的烷基、烯基和炔基等基团(如有需要),通过将化学式##STR2##中X和X.sup.1独立地代表氟、氯或溴的1,2-二卤代-4-三氟甲基苯与化学式##STR3##中R具有上述给定含义的酚,以及碱性碱金属或碱土金属化合物或化学式(III)中形成的盐,存在稀释剂的情况下,在60℃至120℃的温度下反应。化学式(I)的化合物是除草剂合成的中间体。