范文编号:ZY103 范文字数:8463,页数:17 摘要:本文对N-杂环卡宾的研究发展和N-杂环卡宾的合成前体物——各种咪唑鎓盐的制备方法及特点等进行了文献综述;对以乙二醛、有机伯胺和氯甲基乙基醚为原料两步合成各种N-烃基取代的咪唑鎓盐的方法的通用性进行了探索性研究;以2,6-二乙基苯胺和叔丁基胺等为原料分别成功地制备得到了1,3-二(2,6-二乙基苯基)咪唑鎓氯化物(盐)和1,3-二叔丁基咪唑鎓氯化物(盐)等目标产物;对以上合成产物进行了结构鉴定。 关键词:N-杂环卡宾;1,3-二烃基咪唑鎓盐;合成 Abstract: This article provides an review of the development of the N-heterocyclic carbenes and as the precursors of the N-heterocyclic carbenes the preparation and characteristics of some 1,3-disubstituted imidazolium salts are mentioned as well. The general property of the synthetic method is researched that comprises a two-step process for preparation of 1,3-dialkylimidazolium salts from glyoxal, organic primary amines and chloromethyl ethyl ether. Starting from 2,6-diethylaniline, tert-butylamine, 1,3-bis-(2,6-diethylphenyl)imidazolium chloride and 1,3-bis-tert-butylimidazolium chloride are obtained successfully; and their structures are characterized respectively. Keywords: N-heterocyclic carbenes; 1,3-dialkylimidazolium salts; Synthesis
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