几种卤代对苯醌合成方法的改进

The Improvement on Synthetic Methods of Dihalogeno-1,4-benzoquinones

摘要: 对2-溴-,2,5-二溴-1,4-对苯二酚(1,3),2,5-二溴-,2,5-二氯-,2,3.二氯-1,4-对苯醌(4,6,8)的合成方法进行了研究,所提出的改进措施,使其合成更方便和简捷,特别是提出了“一锅法”合成2,5-二氯对苯醌(6),即盐酸与对苯醌加成和硝酸的氧化同时进行的方法。

Abstract: The synthetic methods of 2-bromo-, 2,5-dibromo-1,4-hydroquinone(1,3), 2,5-dibromo-, 2,5-dichloro-, 2,3-dichloro-1,4-benzoquiones(4.6,8) was improved. The much easier and more efficient methods were discussed. Also. "one pot" method of synthesizing 2, 5-dichloroquinone(6) was put forward. It has hydrochloric acid adding to quinone and oxidated by nitric acid at the same time.