Synthesis, Characterization and Fluorescent Property Evaluation of 1,3,5-Triaryl-2-pyrazolines
作者:Aurangzeb Hasan、Asghar Abbas、Muhammed Nadeem Akhtar
DOI:10.3390/molecules16097789
日期:——
A series of 1,3,5-triaryl-2-pyrazolines was synthesized by dissolving the corresponding 4-alkoxychalcones in glacial acetic acid containing a few drops of concentrated hydrochloric acid. This step was followed by the addition of (3,4-dimethylphenyl) hydrazaine hydrochloride. Finally the target compounds were precipitated by pouring the reaction mixture onto crushed ice. The structures of the synthesized compounds were established by physicochemical and spectroscopic methods. The 1,3,5-triaryl-2-pyrazolines bearing homologous alkoxy groups were found to possess fluorescence properties in the blue region of the visible spectrum when irradiated with ultraviolet radiation. The fluorescent behavior of these compounds was studied by UV-Vis and emission spectroscopy, performed at room temperature.
一系列1,3,5-三芳基-2-吡唑啉通过将相应的4-烷氧基查尔cones溶解在含有几滴浓盐酸的冰醋酸中合成。接下来加入(3,4-二甲基苯基)肼盐酸盐。最后,通过将反应混合物倒在碎冰上使目标化合物沉淀。合成化合物的结构通过物理化学和光谱学方法确定。含有同系烷氧基的1,3,5-三芳基-2-吡唑啉在紫外辐射照射下发现具有蓝色可见光谱区域的荧光特性。这些化合物的荧光行为通过在室温下进行的紫外-可见光和发射光谱学进行了研究。