A facile route to the new triazene dyes based on substituted pyrazolidin-3,5-dione derivatives
作者:Jalal Isaad、Fouad Malek、Ahmida El Achari
DOI:10.1016/j.dyepig.2011.07.023
日期:2012.3
coupling functionalized pyrazolidin-3,5-dione derivatives, to various heteroarene azides in excellent yields (98%). Electron delocalization between the two coupled components of these triazene dyes was studied using UV–vis spectra and NMR spectroscopy. Their thermolysis was investigated and by using an isotopically labeled triazene, the mechanism decomposition reaction was also identified. The protolysis
几种取代的三氮烯染料是通过将官能化的吡唑烷定3,5-二酮衍生物与各种杂芳基叠氮化物偶联而制得的,产率极高(98%)。使用紫外可见光谱和核磁共振波谱研究了这些三氮烯染料的两个偶合组分之间的电子离域。研究了它们的热分解,并通过使用同位素标记的三氮烯,还确定了其分解反应的机理。对这些三氮烯的质子分解进行了评估,结果表明它们是高度稳定的,甚至在强酸性介质中也是如此。