A rapid, efficient, and reliable catalyst-free procedure for the synthesis of quinoxaline derivatives in glycerol under focused microwave irradiation was developed. The reaction proceeded in glycerol without any catalyst making this methodology valuable from both economic and environmental viewpoints.
Ionic liquid functionalized cellulose as an efficient heterogeneous catalyst for the facile and green synthesis of benzoxazine, pyrazine and quinoxaline derivatives in aqueous media
作者:Sevil Vaghefi Moghaddam、Hassan Valizadeh
DOI:10.1007/s13738-016-0868-0
日期:2016.8
acidic ionic liquid, 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium hydrogen sulfate on cellulose (Cell-[pmim]HSO4) as an efficient heterogenous catalyst for the simple and environmentally benign synthesis of benzoxazine, pyrazine and quinoxaline derivatives in aqueousmedia at room temperature is described. The catalyst was characterized by FTIR spectroscopy and X-ray diffraction pattern. This method
The long-range substituent effects on the Riley reaction mechanism were determined by NMR and DFT calculations.
长程取代基对Riley反应机理的影响是通过NMR和DFT计算确定的。
Microwave-Assisted Synthesis of Quinoxalines in PEG-400
作者:Xia-Zhong Zhang、Jin-Xian Wang、Lin Bai
DOI:10.1080/00397911.2010.496134
日期:2011.7.15
[image omitted] A rapid and efficient procedure for the synthesis of quinoxaline derivatives has been achieved by condensation of aryl-1,2-diamines with 1,2-dicarbonyl compounds catalyzed by polyethylene glycol under CEM-focused microwave-irradiation conditions.
Synthesis of quinoxaline derivatives catalyzed by PEG-400
作者:Xia Zhong Zhang、Jin Xian Wang、Yong Jun Sun、Hong Wen Zhan
DOI:10.1016/j.cclet.2009.12.015
日期:2010.4
Polyethylene glycol (PEG) was found to be an effective catalyst for the condensation of 1,2-diamines with 1,2-dicarbonyl compounds to afford the corresponding quinoxaline derivatives in excellent yields under mild reaction conditions. (C) 2009 Jin Xian Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.