Synthesis of New Dipyrido-Annulated N-Heterocyclic Carbenes with Ortho-Substituents
Synthesis of New Dipyrido-Annulated N-Heterocyclic Carbenes with Ortho-Substituents
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具有邻位取代基的新型联吡啶环化N-杂环卡宾的合成
DOI：
10.1021/ic402301u
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发表时间：
2013
影响因子：
4.6
通讯作者：
and Yohsuke Yamamoto
中科院分区：
文献类型：
--
作者：
Shin-ichi Fuku-en;Junki Yamamoto;Mao Minoura;Satoshi Kojima;and Yohsuke Yamamoto
本文描述了一种在2，10-二叔丁基二吡啶并[1，2-c;2′，1 ′-e]咪唑鎓盐的4位和8位引入各种取代基的方法。通过三步反应合成了4位和8位带有取代基（R′ = Cl，SPh）的咪唑盐，并利用咪唑盐生成的卡宾合成了相应的铑配合物。根据金属部分的性质，4，8-取代基的作用可以是旁观者或配位配体。
A method for the introduction of various substituents at the 4 and 8 positions of 2,10-di-tert-butyldipyrido[1,2-c;2′,1′-e]imidazolium salts, is described. The new imidazolium salts bearing substituents (R′ = Cl, SPh) at the 4 and 8 positions are synthesized in three-step procedures, and carbenes generated from the imidazolium salts can be used to give the corresponding rhodium complexes. The role of the 4,8-substituents can be either bystanders or coordinating ligands according to the nature of the metal moiety.