申请人:Occidental Chemical Corporation
公开号:US05196593A1
公开(公告)日:1993-03-23
Novel halogenated trifluoromethylbenzenes have the structural formula ##STR1## wherein X is halogen, preferably Cl, F or Br, and R is a group selected from the group consisting of --COOH, --C(O)NH.sub.2 and --CN. These compounds are intermediates for pesticidal trifluoromethyl diphenyl ethers and are converted thereto by replacing the fluorine para to the trifluoromethyl with substituted phenoxy group in aromatic nucleophilic substitution. A novel intermediate which is converted by reaction with cuprous cyanide and HONO to compound having the above structural formula where X is F and R is --CN is 2,3-difluoro-5-(trifluoromethyl)aniline and has the formula ##STR2##
新型卤代三氟甲基苯的结构式为##STR1## 其中X为卤素,优选为Cl,F或Br,R为从--COOH,--C(O)NH.sub.2和--CN组成的群体中选择的群体。这些化合物是杀虫三氟甲基二苯醚的中间体,并通过在芳香族亲核置换中用取代的苯氧基替换三氟甲基对位的氟原子而转化为它们。一种新型中间体,通过与亚铜氰和HONO反应转化为具有上述结构式(其中X为F,R为--CN)的化合物的是2,3-二氟-5-(三氟甲基)苯胺,其化学式为##STR2##。