Synthesis, Characterization, and Theoretical Calculation of New Azo Dyes Derived from [1,5‐
<i>a</i>
]Pyrimidine‐5‐one Having Solvatochromic Properties
作者:Nesrin Şener、Mahmut Gür、M. Serdar Çavuş、Merve Zurnaci、İzzet Şener
DOI:10.1002/jhet.3497
日期:2019.3
2‐aminobenzothiazole with ethyl cyanoacetate in acetic acid at 150°C. Four novel heterocyclic azo disperse dyes were obtained by the coupling of heterocyclic amines‐based diazonium chloride with compound 3. They were purified and characterized by elemental analysis, FTIR, and 1H NMR. Furthermore, solvatochromic behaviors of related dyes were studied in detail by using ultraviolet–visible absorption spectrometer
7-氨基-3-苯基偶氮-2-甲基-4 H-吡唑并[1,5 - a ]嘧啶-5-酮(3)是通过5-氨基-3-甲基-4-苯基偶氮-1的反应合成的在150°C的条件下,将H-吡唑和2-氨基苯并噻唑与氰基乙酸乙酯混合在乙酸中。通过基于杂环胺的重氮氯化物与化合物3的偶联,获得了四种新型的偶氮杂环分散染料。通过元素分析,FTIR和1对它们进行了纯化和表征1 H NMR。此外,使用紫外可见吸收光谱仪详细研究了相关染料的溶剂溶变色行为。密度泛函理论使用b3lyp / cc-pvtz水平计算为实验数据提供了支持,并对预测的互变异构结构进行了详细分析。