Synthesis, Electrochemical and Spectroscopic Characterization of Selected Quinolinecarbaldehydes and Their Schiff Base Derivatives
作者:Jakub Wantulok、Marcin Szala、Andrea Quinto、Jacek E. Nycz、Stefania Giannarelli、Romana Sokolová、Maria Książek、Joachim Kusz
DOI:10.3390/molecules25092053
日期:——
A new approach to the synthesis of selected quinolinecarbaldehydes with carbonyl groups located at C5 and/or in C7 positions is presented in this paper in conjunction with spectroscopic characterization of the products. The classical Reimer-Tiemann, Vilsmeier-Haack and Duff aldehyde synthesis methods were compared due to their importance. Computational studies were carried out to explain the preferred
结合产物的光谱表征,本文提出了一种合成具有位于 C5 和/或 C7 位的羰基的选定喹啉甲醛的新方法。由于其重要性,比较了经典的 Reimer-Tiemann、Vilsmeier-Haack 和 Duff 醛合成方法。进行了计算研究以解释所呈现的甲酰化转化的优选选择性。提出了一种基于 Reimer-Tiemann 方法的卡宾插入反应,用于制备 7-bromo-8-hydroxyquinoline-5-carbaldehyde。此外,Duff 和 Vilsmeier-Haack 反应用于喹啉衍生物及其类似物苯并 [h] 喹啉-10-醇、8-羟基-2-甲基喹啉-5,7-二甲醛、8-(二甲氨基)喹啉的双甲酰化-5, 7-二甲醛和10-羟基苯并[h]喹啉-7,9-二甲醛。2,6-二异丙基苯胺的四种席夫碱衍生物是通过有效的合成方案从选定的喹啉-5-甲醛和喹啉-7-甲醛制备的。它们的特性已通过多种技术的