申请人:Kempter Peter
公开号:US20110098466A1
公开(公告)日:2011-04-28
The invention relates to a process for the preparation of compounds of the general formula (I) where X are halogen atoms, the rings labeled A are linearly or angularly fused in position 1,2; 2,3 or 3,4, and in position 8,9; 9,10 or 10,11, to a 5- or 6-membered heterocyclic ring containing in the ring one nitrogen atom and one oxygen atom, or containing in the ring two nitrogen atoms, comprising an oxidation of a 3,6-bisarylamino-2,5-dihalobenzoquinone of the formula (II) in an aprotic-polar organic solvent in the presence of an organic sulfonic acid.
本发明涉及一种制备通式(I)化合物的方法,其中X是卤素原子,标记为A的环在位置1,2;2,3或3,4处线性或角度融合,并在位置8,9;9,10或10,11处与一个5或6元杂环环中的一个氮原子和一个氧原子或含有两个氮原子的环中进行,包括在无水极性有机溶剂中存在有机磺酸的情况下对通式(II)的3,6-双芳基氨基-2,5-双卤代苯醌进行氧化。