作　　者： ; ; ; ; ;

机构地区： 河南省分析测试中心

出　　处： 《光谱学与光谱分析》 2003年第6期1101-1103,共3页

摘　　要： 总结归属了2-氨基-3-氨基甲酰基-5-芳基吡嗪和6-芳基-4(3H)-蝶啶酮及其苯环对位卤代衍生物的主要红外吸收谱带和特征,讨论了它们随化学结构而变化的一些规律。研究发现苯环取代基的改变对苯环的ν_(C—H)和δ_(C—H)振动都有影响,而Cl和Br的影响作用几乎相同。并且指明了成环前后酰胺类型的变化导致光谱图有明显变化,以及苯环上C—X的红外吸收谱带范围。也可用文中的红外光谱数据来快速鉴别酰胺是否环化为内酰胺。 The 6-Aryl-4(3H)-pteridinones and 2-amino-3-carbamoyl-5-phenylpyrazines, and their p-substitute of the phenyl series compounds were synthesized. Their IR spectra have been determined and the relations between the structures and the IR data have been studied. The results showed that the nu(C)-(H) and delta(C)-(H) vibration of the phenyl was affected by different substituted groups attached on it, and bromine and chlorine have the same effect. We have pointed out the range of phenyl C-X vibration on the spectra, and it was also found that the spectra have changed notably after the cyclization. We can quickly and accurately determine whether the acyl was cyclized to lactam or not by IR spectra with the data in this article.

关 键 词： 芳基 蝶啶酮化合物 红外特征光谱 取代基 酰胺 内酰胺 环化

领　　域： [理学] [理学]