Approaches to heterocyclic analogues of biphenylene. Part I. The reaction of 5,6-diaryl-2,3-dihydropyrazines with alcoholic alkali

P. England, R. McDougall
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引用次数: 4

Abstract

2,3-Dihydro-5,6-diphenylpyrazine reacts with alcoholic alkali to form 2,3-diphenylpyrazine and 5,5′,6,6′-tetraphenyl-2,2′-bipyrazinyl, not 2,3,6,7-tetraphenyl-1,4,5,8-tetra-azabiphenylene. 2,3-Dihydro-5,6-bis-(p-methoxy-phenyl)pyrazine undergoes an analogous reaction, but 2,3-dihydro-5,6-bis-(p-nitrophenyl)pyrazine yields only an apparently polymeric material. The reaction of pp′-dinitrobibenzoyl with ethylenediamine produces not only 2,3-dihydro-5,6-bis-(p-nitrophenyl)pyrazine, but also NN′-bis-(p-nitrobenzoyl)ethylenediamine.
联苯杂环类似物的研究。第一部分:5,6-二芳基-2,3-二氢吡嗪与醇碱的反应
2,3-二氢-5,6-二苯基吡嗪与酒精碱反应生成2,3-二苯基吡嗪和5,5 ',6,6 ' -四苯基-2,2 ' -联吡嗪基,而不是2,3,6,7-四苯基-1,4,5,8-四氮杂苯。2,3-二氢-5,6-二-(对甲氧基苯基)吡嗪进行类似的反应,但2,3-二氢-5,6-二-(对硝基苯基)吡嗪只产生明显的聚合物质。pp′-二硝基联苯甲酰与乙二胺的反应不仅可以生成2,3-二氢-5,6-二-(对硝基苯基)吡嗪,还可以生成NN′-二-(对硝基苯基)乙二胺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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