The synthesis, X-ray crystal structure and optical properties of novel 1,3,5-triaryl pyrazoline derivatives
作者:Zhong-Liang Gong、Liang-Wen Zheng、Bao-Xiang Zhao、De-Zhong Yang、Hong-Shui Lv、Wei-Yong Liu、Song Lian
DOI:10.1016/j.jphotochem.2009.10.007
日期:2010.1
A series of novel 1,3,5-triaryl pyrazoline derivatives has been synthesized by the reaction of chalcone and 3-chloro-6-hydrazinylpyridazine in 47–82% yields. The structures of compounds obtained were determined by IR, 1H NMR and HRMS spectra. Representatively, the spatial structure of compound 3d was determined by using X-ray diffraction analysis. Absorption and fluorescence spectral characteristics
查尔酮与3-氯-6-肼基吡啶并恶嗪反应以47-82%的产率合成了一系列新型的1,3,5-三芳基吡唑啉衍生物。通过IR,1 H NMR和HRMS光谱确定获得的化合物的结构。代表性地,通过使用X射线衍射分析来确定化合物3d的空间结构。通过紫外可见吸收和发射光谱研究了化合物在CHCl 3中的吸收和荧光光谱特征。结果表明,取决于与苯环键合的基团,化合物的最大吸收在332至342 nm之间变化。CHCl 3中化合物的最大发射光谱取决于苯环中的基团,其中苯环中的强供电子基团(例如吡唑啉的C3位上的甲氧基)使3e,3f和3g的发射波长比含氯化合物3b,3c和3d的发射波长偏移组。吸收和荧光的强度也与两个芳基环上的取代基相关。此外,这些化合物的吸收光谱随溶剂极性的增加而变化很小。