Process for the preparation of 2,3-dihalogenoquinoxalines
申请人:Bayer Aktiengesellschaft
公开号:US05777119A1
公开(公告)日:1998-07-07
Quinoxalines are prepared by reaction of oxalic acid with an o-phenylenediamine, halogenation in the presence of a solvent and oxidation to a quinoxaline carboxylic acid derivative.