An operationally simple method with 100% atom economy has been developed for the synthesis of various N-(quinolin-2-yl)amides via the TsOH·H2O-mediated N-amidation of quinoline N-oxides using inexpensive and commercially available nitriles as the amidation reagents. Mechanistic exploration suggested that the reaction probably proceeds through an acid-assisted 1,3-dipolar cycloaddition and an N–O bond
The simple and inexpensive N,N-dimethylcyclohexane-1,2-diamine/CuI catalytic system provides a versatile, easy and efficient access to an array of N-(2-pyridin-2-yl)-amides from 2-chloro-pyridine derivatives.
Ce(<scp>iii</scp>)-catalyzed highly efficient synthesis of pyridyl benzamides from aminopyridines and nitroolefins without external oxidants
作者:Zhengwang Chen、Xiaowei Wen、Yiping Qian、Pei Liang、Botao Liu、Min Ye
DOI:10.1039/c7ob03113k
日期:——
An efficient Ce(iii)-catalyzed synthesis of amides and oxazolo[4,5-b]pyridines from 2-aminopyridines and nitroolefins via CC bond cleavage has been developed.
Practical preparation of challenging amides from non-nucleophilic amines and esters under flow conditions
作者:Johannes L. Vrijdag、Francisca Delgado、Nerea Alonso、Wim M. De Borggraeve、Natalia Pérez-Macias、Jesus Alcázar
DOI:10.1039/c4cc07129h
日期:——
Preparation of amides from low nucleophilic heterocyclic amines is achieved in 2 minutes under mild conditions.
从低亲核杂环胺制备酰胺在温和条件下可以在2分钟内完成。
Metal‐free Deoxygenative 2‐Amidation of Quinoline
<i>N</i>
‐oxides with Nitriles via a Radical Activation Pathway
作者:Long‐Yong Xie、Sha Peng、Fang Liu、Jin‐Yu Yi、Ming Wang、Zilong Tang、Xinhua Xu、Wei‐Min He
DOI:10.1002/adsc.201800918
日期:2018.11.5
reductant‐free approach for the efficientsynthesis of various N‐acylated 2‐aminoquinolines was reported. In this work, readily available nitriles are used as the amide source, and methyl carbazate as both the radical activating reagent and oxygen source. This is the first report on the ester‐radical‐activated highly regioselective addition of nitriles to quinolone N‐oxides. This procedure is expected