发明授权
US5777119A Process for the preparation of 2,3-dihalogenoquinoxalines 失效
2,3-二卤代喹喔啉的制备方法

Process for the preparation of 2,3-dihalogenoquinoxalines
摘要:
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.
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