申请人:——
公开号:US05471002A1
公开(公告)日:1995-11-28
A process for preparing trifluoromethylanilines of the formula (I), ##STR1## in which R.sup.1 and R.sup.2, independently of each other, are hydrogen, halogen, (C.sub.1 -C.sub.4) alkyl, hydroxyl, alkoxy, alkylthio, carboxyl, or a nitro or cyano group, by reacting compounds of the formula (II) ##STR2## in which X.sub.1, X.sub.2 and X.sub.3 are in each case, identically or differently, halogen atoms, a is 0 or 1, Y is fluorine, chlorine or bromine, and R.sup.1 and R.sup.2 have the defined meaning, with anhydrous hydrofluoric acid, and converting the resulting aniline hydrofluorides with a base into the free amines.
一种制备式(I)的三氟甲基苯胺的方法,其中R.sup.1和R.sup.2独立地是氢、卤素、(C.sub.1-C.sub.4)烷基、羟基、烷氧基、烷硫基、羧基、或硝基或氰基,包括将式(II)的化合物与无水氢氟酸反应,其中X.sub.1,X.sub.2和X.sub.3在每种情况下都是相同或不同的卤素原子,a为0或1,Y为氟、氯或溴,R.sup.1和R.sup.2具有所定义的含义,并将所得的苯胺氢氟酸盐与碱转化为自由胺。