2-(2-苯基丙烯基)苯并噁唑类化合物的合成与光谱研究

Research on the Synthesis and Spectroscopy of 2-(2-Phenyl Propenyl) Benzoxazoles

本文讨论了 2 ( 2 取代苯基丙烯基 )苯并唑类化合物的合成方法以及取代基对产率的影响 ,并用IR ,NMR ,MS ,FL等光谱方法对它们进行了结构表征。初步探讨了取代基对各种光谱的影响。结果表明 ,取代基对苯并唑环的特征红外吸收有影响但没有明显的线性规律 ,吸电子取代基对分子中丙烯氢和甲基的化学位移影响明显 ,取代的标题化合物的质谱易出现较强的双正离子碎片。同时讨论了有关紫外光谱和荧光光谱的一些实验现象。

In this paper the synthetic methods and the substituent effects on yields were discussed.It was found that the yields were not high,and the compounds with electron-drawing groups had higher yields.Some compounds with electron-giving groups such as t-Bu couldn′t be synthesized by wittig-horner method.The compounds were characterized by IR, 1H NMR,MS,UV and FL.The experimental results indicated that there was not quantitative substituent effect on IR,the electron-drawing groups had great effect on the chemical shifts of propenyl hydrogen and methyl hydrogen,the strong double-electron fragments existed in MS.Some experimental phenomena of UV and FL were also studied.