Synthesis of π‐Expanded Azole‐Fused Imidazo[1,2‐a]pyridine Derivatives and their Photophysical Properties,European Journal of Organic Chemistry

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Synthesis of π‐Expanded Azole‐Fused Imidazo[1,2‐a]pyridine Derivatives and their Photophysical Properties
European Journal of Organic Chemistry ( IF 2.5 ) Pub Date : 2020-04-21 , DOI: 10.1002/ejoc.202000236
Nitesh Kumar Nandwana ₁ , Shiv Dhiman ₁ , Vikki N. Shinde ₁ , Uwe Beifuss ₂ , Anil Kumar ₁

Affiliation

Structurally diverse imidazo[1,2‐a]pyrido[2',1':2,3]imidazo[4,5‐c]quinoline derivatives and benzo[4,5]imidazo[1,2‐a]pyrido[2',1':2,3]‐imidazo[4,5‐c]‐quinoline derivatives have been prepared from 2‐(2‐bromophenyl)‐imidazo[1,2‐a]pyridine‐3‐carbaldehyde in a one‐pot, two‐step method in good to excellent (50–85 %) yields. Photophysical properties (absorption and emission) and solvatochromism of these π‐expanded compounds have been evelauted. The azole‐fused imidazo[1,2‐a]pyridines showed a high fluorescence emission with moderate to good quantum yields.

中文翻译：

π-扩展的偶氮唑并咪唑并[1,2-a]吡啶衍生物的合成及其光物理性质

结构不同的咪唑并[1,2- a ]吡啶[2'，1'：2,3]咪唑并[4,5- c ]喹啉衍生物和苯并[4,5]咪唑[1,2- a ]吡啶[2 ”，1' ：2,3]咪唑并[4,5- c ^ ] -喹啉衍生物已经由2-（2-溴苯基） -咪唑并[1,2制备一个]吡啶-3-甲醛在一维壶，分两步进行，收率达到优良（50-85％）。这些π扩展化合物的光物理性质（吸收和发射）和溶剂致变色现象受到赞扬。唑基咪唑并[1,2- a ]吡啶显示出高荧光发射，量子产率中等至良好。

更新日期：2020-04-21

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