Synthesis of π-Expanded Azole-Fused Imidazo[1,2-<i>a</i>
]pyridine Derivatives and their Photophysical Properties
作者:Nitesh Kumar Nandwana、Shiv Dhiman、Vikki N. Shinde、Uwe Beifuss、Anil Kumar
DOI:10.1002/ejoc.202000236
日期:2020.5.10
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
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。