申请人:DowElanco
公开号:US05041674A1
公开(公告)日:1991-08-20
1-Chloro-3,5-difluorobenzene is chlorinated to give 4,6-difluoro-1,2,3-trichlorobenzene which in turn is nitrated and reduced to the corresponding novel aniline, 2,6-difluoro-3,4,5-trichloroaniline. Further reduction of this aniline provides 2,6-difluoroaniline with high selectivity.
1-氯-3,5-二氟苯被氯化以得到4,6-二氟-1,2,3-三氯苯,然后通过硝化和还原反应,得到了对应的新型苯胺,2,6-二氟-3,4,5-三氯苯胺。进一步还原此苯胺,可以高选择性地得到2,6-二氟苯胺。