申请人:BASF Aktiengesellschaft
公开号:US05401846A1
公开(公告)日:1995-03-28
There are described the preparation of 5-halo-2-(1-anthraquinonylamino)benzoic acids of the general formula I ##STR1## (X.sup.1 : Cl or Br; X.sup.2 : H, Cl or Br, identical or different when n>1; n: 1-6) by reacting 2-(1-anthraquinonylamino)benzoic acids II ##STR2## with the halogen in the presence of sulfuric acid, and the preparation of 4'-halo-2,1(N)-anthraquinonyl-1',2'(N)-benzacridones III ##STR3## by cyclizing condensation of the acids I.
本文描述了通式I的5-卤代-2-(1-蒽醌氨基)苯甲酸的制备方法,其中:X1:Cl或Br;X2:H,Cl或Br,当n>1时,相同或不同;n:1-6。该方法是通过在硫酸存在下,将2-(1-蒽醌氨基)苯甲酸II与卤素反应得到的。此外,本文还描述了通过环化缩合反应制备4'-卤代-2,1(N)-蒽醌基-1',2'(N)-苯并蒽酮III的方法。