Selenium-Promoted Intramolecular Oxidative Amidation of 2-(Arylamino)acetophenones for the Synthesis of<i>N</i>-Arylisatins
作者:Yong Liu、Hui Chen、Xiong Hu、Wang Zhou、Guo-Jun Deng
DOI:10.1002/ejoc.201300477
日期:2013.7
A convenient method for the synthesis of N-arylisatins from 2-(arylamino)acetophenones by using SeO2 as an oxidant is described. Various substituted N-arylisatins were selectively obtained in good to excellent yields. The reaction tolerates a wide range of functionalities.
<scp>4‐Dimethylaminopyridine‐Boryl</scp>
Radical Promoted Monodefluorinative Alkylation of 3,
<scp>3‐Difluorooxindoles</scp>
作者:Tesfaye Tebeka Simur、Fentahun Wondu Dagnaw、You‐Jie Yu、Feng‐Lian Zhang、Yi‐Feng Wang
DOI:10.1002/cjoc.202100784
日期:2022.3
A selective monodefluorinative alkylation of 3,3-difluorooxindoles is achieved. The reaction starts by the attack of a 4-dimethylaminopyrine-boryl radical to the carbonyloxygen atom of 3,3-difluorooxindoles, followed by a spin-center shift to generate radical intermediates with the elimination of a fluoride anion. The subsequent radical addition to alkenes affords a range of 3-alkyl-fluorooxindoles
Dimethyl sulfoxide-aided copper(0)-catalyzed intramolecular decarbonylative rearrangement of N-aryl isatins leading to acridones
作者:Hao Wu、Nana Ma、Mengxiao Song、Guisheng Zhang
DOI:10.1016/j.cclet.2019.10.043
日期:2020.6
Abstract Described here is the first example of Cu(0)-catalyzed intramolecular decarbonylative rearrangements of readily available N-aryl isatins assisted by solvent dimethyl sulfoxide (DMSO) under air atmosphere and additive-free conditions leading to various biologically important acridones in good to excellent yields. This novel transformation is proposed to go through a sequential DMSO-aided Cu
Synthesis of N-Arylisatins using NaY Heterogeneous Catalyst under Microwave Irradiations
作者:RAVINDER SINGH、RAMESH KUMAR
DOI:10.13005/ojc/280258
日期:2012.6.18
N-Arylisatins are synthesized in high yield in shorter reaction time by the reaction of 2-oxo2-(Arylamino)acetates and arynes usingNaYheterogeneouscatalystundermicrowaveirradiations.
Synthesis of N-Arylisatins Using Different Heterogeneous Catalyst Under Microwave Irradiations
作者:Ravinder Singh、Ramesh Kumar
DOI:10.14233/ajchem.2013.14146
日期:——
N-Arylisatins having both biological and medical properties are synthesized by the reaction of methyl-2-oxo-2-(arylamino)acetates and arynes using NaHCO3 in presence of different heterogeneous catalyst under microwave irradiations in high yield in shorter reaction time.