The ring-opening reaction of imidazo[1,5-a]quinolines under photoredox conditions has been described. With Eosin Y as the organophotoredox catalyst, synthetically useful and medicinally important imides were obtained in moderate to excellent yields under mild reaction conditions.
Electrocatalytic Intermolecular C(sp<sup>3</sup>)–H/N–H Coupling of Methyl <i>N</i>-Heteroaromatics with Amines and Amino Acids: Access to Imidazo-Fused <i>N</i>-Heterocycles
作者:Peng Qian、Zicong Yan、Zhenghong Zhou、Kangfei Hu、Jiawei Wang、Zhibin Li、Zhenggen Zha、Zhiyong Wang
DOI:10.1021/acs.orglett.8b02578
日期:2018.10.19
An efficient NH4I-mediated intermolecular annulation of methyl N-heteroaromatics with amines/amino acids was developed by virtue of anodic oxidation, providing a variety of functionalized imidazo-fused N-heterocycles with good to excellent yields. The practicality of this protocol was demonstrated by the readily available starting materials, broad substrate scope, water tolerance, scalability, and
Copper-Promoted Double Oxidative C–H Amination Cascade for the Synthesis of Imidazo[1,5-<i>a</i>]quinolines
作者:Zhong Li、Song-Song Wu、Zai-Gang Luo、Wei-Kang Liu、Cheng-Tao Feng、Shi-Tang Ma
DOI:10.1021/acs.joc.6b00569
日期:2016.5.20
A copper-promoted cascade reaction of 2-methylazaarenes and benzylamines has been developed via sequential double oxidative C(sp3)–H aminations. This protocol provides straightforward access to imidazo[1,5-a]quinoline derivatives without employing prefunctionalized substrates.
通过连续的双氧化C(sp 3)-H胺化反应开发了2-甲基氮杂芳烃和苄胺的铜促进的级联反应。该协议无需使用预功能化的底物即可直接获得咪唑并[1,5- a ]喹啉衍生物。
Electrochemical synthesis of selenocyanated imidazo[1,5-a]quinolines under metal catalyst- and chemical oxidant-free conditions
selenocyanation of imidazo[1,5-a]quinolines with KSeCN under metal catalyst- and chemical oxidant-free conditions. This sustainable strategy shows a broad scope and great compatibility with functional groups, and affords synthetically and biologically important selenocyanated imidazo[1,5-a]quinolines in good to excellent yields with cheap graphite and Ni plates as the electrodes. The gram-scale synthesis was also