摘要 2芳基咪唑的钯-催化的芳基化直接[1,2一]吡啶与ö -dihaloarenes经由双C-H活化进行说明。该方法包括2-芳基咪唑并[1,2- a ]吡啶的分子间C3-芳基化,然后以高度区域选择性的方式进行分子内C5-芳基化,得到苯并[ a ]咪唑并[5,1,2- cd ]吲哚并嗪衍生物。中等至良好的产量。 2芳基咪唑的钯-催化的芳基化直接[1,2一]吡啶与ö -dihaloarenes经由双C-H活化进行说明。该方法包括2-芳基咪唑并[1,2- a ]吡啶的分子间C3-芳基化,然后以高度区域选择性的方式进行分子内C5-芳基化,得到苯并[ a ]咪唑并[5,1,2- cd ]吲哚并嗪衍生物。中等至良好的产量。
Tandem [8 + 2] Cycloaddition−[2 + 6 + 2] Dehydrogenation Reactions Involving Imidazo[1,2-<i>a</i>]pyridines and Imidazo[1,2-<i>a</i>]pyrimidines
作者:Maialen Aginagalde、Yosu Vara、Ana Arrieta、Ronen Zangi、Vicente L. Cebolla、Arantzazu Delgado-Camón、Fernando P. Cossío
DOI:10.1021/jo9022815
日期:2010.5.7
The reaction between benzynes and imidazo[1,2-a]pyridines (pyrimidines) to form benzo[a]imidazo[5,1,2-cd]indolizines and 2,3,9c-triazocyclopenta[j,k]fluorenes has been studied computationally and experimentally. It is found that these reactions take place via tandem [π8s + π2s] and [σ2s + π6s + σ2s] processes. The [8 + 2] cycloaddition steps are essentially barrierless, and the aromatization steps
苯并炔与咪唑并[1,2- a ]吡啶(嘧啶)之间形成苯并[ a ]咪唑并[5,1,2- cd ]吲哚并2,3,9c-三偶氮环戊[ j,k ]芴的反应通过计算和实验研究。据发现,这些反应通过串联发生[ π 8个小号+ π 2小号]和[ σ 2小号+ π 6小号+ σ 2个小号]流程。[8 + 2]环加成步骤基本无障碍,芳构化步骤通过高度同步的芳族过渡结构进行。从实验的角度来看,该反应在微波辐射下并且使用2-(三甲基甲硅烷基)苯基三氟甲磺酸酯作为苯炔前体是可行的。根据起始三氟甲磺酸酯的取代方式,可以实现反应的完全区域控制。如此制备的四环化合物在365 nm激发时发出蓝光,并表现出令人感兴趣的光物理性质。
Annulation of imidazo[1,2-<i>a</i>]pyridines under metal-free conditions
A base promoted protocol for the synthesis of benzo[a]imidazo[5,1,2-cd]indolizines from 2-arylimidazo[1,2-a]pyridines and benzyne precursors under metal-free conditions has been developed. Without a transition metal, double C(sp2)–H activation of 2-phenylimidazo[1,2-a]pyridines under basic conditions was achieved. This method is also applicable for the annulation of imidazo[1,2-a]pyrimidine and naphthylamine
已开发了在无金属条件下由2-芳基咪唑[1,2- a ]吡啶和苯炔前体合成苯并[ a ]咪唑并[5,1,2- cd ]吲哚嗪的基础促进方案。没有过渡金属,双C(SP 2)- H 2苯基咪唑的活化[1,2一]在碱性条件下的吡啶达到了。该方法也适用于在相同条件下咪唑并[1,2- a ]嘧啶和萘胺的环化反应。这些环状分子表现出荧光特性,因此评价了它们的光物理性质。
[EN] BENZO-IMIDAZOINDOLIZINE DERIVATIVE, ORGANIC ELECTROLUMINESCENCE ELEMENT MATERIAL USING THE SAME, AND ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE USING THE SAME<br/>[FR] DÉRIVÉ DE BENZO-IMIDAZOINDOLIZINE, MATÉRIAU D'ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE L'UTILISANT, ET ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE ET DISPOSITIF ÉLECTRONIQUE L'UTILISANT
申请人:IDEMITSU KOSAN CO
公开号:WO2019155363A1
公开(公告)日:2019-08-15
The present invention relates to benzo-imidazoindolizine derivatives, organic electroluminescence devices comprising said derivative, and the use of said derivative in organic electroluminescence devices.
BENZO-IMIDAZOINDOLIZINE DERIVATIVE, ORGANIC ELECTROLUMINESCENCE ELEMENT MATERIAL USING THE SAME, AND ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE USING THE SAME
申请人:Idemitsu Kosan Co., Ltd.
公开号:EP3524607A1
公开(公告)日:2019-08-14
The present invention relates to benzo-imidazoindolizine derivatives, organic electroluminescence devices comprising said derivative, and the use of said derivative in organic electroluminescence devices.