Synthesis, X-ray crystal structure and optical properties of novel 5-(3-aryl-1H-pyrazol-5-yl)-2-(6-methoxy-3-methylbenzofuran-2-yl)-1,3,4-oxadiazole
作者:Zhen-Ju Jiang、Jin-Ting Liu、Hong-Shui Lv、Bao-Xiang Zhao
DOI:10.1016/j.saa.2011.10.021
日期:2012.2
position of benzene moiety. The maximum emission spectra of compounds in two different solvents were mainly dependent on groups in N-1 position of pyrazole moiety. The intensity of absorption and fluorescence was also correlated with substituents on the aryl ring bonded to pyrazole moiety. In addition, the absorption and emission spectra of these compounds change with increasing solvent polarity.
由6-苯甲酸酯合成了一系列新颖的5-(3-芳基-1H-吡唑-5-基)-2-(6-甲氧基-3-甲基苯并呋喃-2-基)-1,3,4-恶二唑衍生物。甲氧基-3-甲基苯并呋喃-2-羧酸和3-芳基-1H-吡唑-5-羧酸乙酯。通过IR,(1)H NMR和HRMS光谱确定获得的化合物的结构。通常,化合物7e的空间结构通过使用X射线衍射分析来确定。研究了该化合物在二氯甲烷和乙腈中的紫外可见吸收和荧光光谱特征。结果表明,取决于吡唑部分的N-1位和苯部分的对位的取代基,化合物的最大吸收在321nm至339nm之间变化。化合物在两种不同溶剂中的最大发射光谱主要取决于吡唑部分N-1位的基团。吸收和荧光的强度还与结合到吡唑部分的芳基环上的取代基相关。另外,这些化合物的吸收和发射光谱随溶剂极性的增加而变化。