Simple route to a novel class of pyrazolidine-3,5-dione based azo dyes
摘要:
We report an easiest synthesis strategy of a new class of synthetic dyes by coupling of functionalized pyrazolidine-3,5-dione derivatives via diazotization reaction with aromatic diamine for the azoic dyes or via dimerization reaction to synthesize the H chromophore dyes. Electron delocalization between the two coupled components has been studied using UV-vis spectroscopy, infrared, and NMR spectroscopy. In addition, the formation mechanism of such compounds has been discussed. (C) 2010 Elsevier Ltd. All rights reserved.
Simple route to a novel class of pyrazolidine-3,5-dione based azo dyes
作者:Jalal Isaad、Anne Perwuelz
DOI:10.1016/j.tetlet.2010.08.002
日期:2010.10
We report an easiest synthesis strategy of a new class of synthetic dyes by coupling of functionalized pyrazolidine-3,5-dione derivatives via diazotization reaction with aromatic diamine for the azoic dyes or via dimerization reaction to synthesize the H chromophore dyes. Electron delocalization between the two coupled components has been studied using UV-vis spectroscopy, infrared, and NMR spectroscopy. In addition, the formation mechanism of such compounds has been discussed. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and spectroscopic characterization of azoic dyes based on pyrazolone derivatives catalyzed by an acidic ionic liquid supported on silica-coated magnetite nanoparticle
作者:Jalal Isaad、Ahmida El Achari
DOI:10.1016/j.molstruc.2017.10.091
日期:2018.2
Abstract Novel family of azoic dyes pyrazolone based were prepared by an efficient and rapid methodology through diazotization reaction of different pyrazolone amine derivatives, in the presence of acidicionicliquid supported on silica-coated magnetite nanoparticles as acidic catalyst at room temperature and under solvent-free conditions. The attractive advantages of the present process include short