Deep Eutectic Solvents as Convenient Media for Synthesis of Novel Coumarinyl Schiff Bases and Their QSAR Studies
作者:Maja Molnar、Mario Komar、Harshad Brahmbhatt、Jurislav Babić、Stela Jokić、Vesna Rastija
DOI:10.3390/molecules22091482
日期:——
environmentally friendly media, were utilized in the synthesis of novel coumarinyl Schiff bases. Novel derivatives were synthesized from 2-((4-methyl-2-oxo-2H-chromen-7-yl)oxy)acetohydrazide and corresponding aldehyde in choline chloride:malonic acid (1:1) based deep eutectic solvent. In these reactions, deep eutectic solvent acted as a solvent and catalyst as well. Novel Schiff bases were synthesized in high yields
深共熔溶剂作为绿色环保的介质,被用于合成新型香豆素席夫碱。新型衍生物由 2 - ((4-methyl-2-oxo-2H-chromen-7-yl) oxy) acetohydrazide 和相应的醛在氯化胆碱: 丙二酸 (1:1) 基低共熔溶剂中合成。在这些反应中,低共熔溶剂同时充当溶剂和催化剂。新型席夫碱以高产率 (65-75%) 合成,无需进一步纯化,其结构已通过质谱、1H 和 13C NMR 确认。此外,还测定了它们的抗氧化活性,并将其与先前合成的衍生物的抗氧化活性进行了比较,从而利用定量构效关系 QSAR 研究来研究它们的构效关系。分子描述符的计算已通过 DRAGON 软件进行。使用三个描述符(MATS3m、Mor22u、Hy)获得的最佳 QSAR 模型(Rtr = 0.636;Rext = 0.709)意味着路径长度为 3 处质量较高的原子对,散射参数 s = 21 处原子的三维排列Å