Metal-free synthesis of quinoline-2,4-dicarboxylate derivatives using aryl amines and acetylenedicarboxylates through a pseudo three-component reaction
作者:Saghir Ali、Abu T. Khan
DOI:10.1039/d1ob01188j
日期:——
scaffolds is accomplished from aryl amines and dimethyl/diethyl acetylenedicarboxylates using 20 mol% molecular iodine as a catalyst in acetonitrile at 80 °C. In addition, the mechanistic explanation for the formation of the desired products is disclosed. The pivotal role of molecular iodine in the formation of the majorproducts, diester quinoline derivatives, and the minor product, triesters, in two cases
在 80 °C 下,使用 20 mol% 分子碘在乙腈中作为催化剂,由芳基胺和乙炔二羧酸二甲酯/二乙酯完成了一种高效、有用且一锅法的 quinoline-2,4-dicarboxylate 支架合成方案。此外,还公开了形成所需产物的机理解释。在机理中描述了分子碘在主要产物二酯喹啉衍生物和次要产物三酯形成中的关键作用,在两种情况下。该方法的显着优点是不涉及金属催化剂,避免最终产品中的金属污染以及废物产生,使用低成本和环保的催化剂,易于处理,区域选择性高,反应时间更短,
Metal-free one-pot synthesis of quinoline-2,4-carboxylates via a molecular iodine-catalyzed three-component reaction of arylamines, ethyl glyoxylate, and α-ketoesters
作者:Guang-Ming Nan、Wei Liu
DOI:10.1016/j.cclet.2015.06.015
日期:2015.10
A simple and metal-free method has been developed for the construction of quinoline-2,4-carboxylates under mild conditions via a molecular iodine-catalyzed three-component tandem reaction of arylamines, ethyl glyoxylate, and alpha-ketoesters. The present protocol provides a convenient and attractive approach to various quinoline-2,4-carboxylates in moderate to good yields with excellent functional group tolerance. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
Selective 1,2- vs 1,4-Addition of N-Arylphosphazenes to β,γ-Unsaturated α-Ketoesters. Synthesis of Quinolinecarboxylates
作者:Francisco Palacios、Javier Vicario、Jesús M. de los Santos、Domitila Aparicio