Synthesis of novel coumarinyl-pyrido[2,3-<i>d</i>]pyrimidine-2,4-diones using task-specific magnetic ionic liquid, [AcMIm]FeCl<sub>4</sub> as catalyst
作者:Srinivasa Rao Ambati、Jeevan Lal Patel、Satish Gudala、Komal Chandrakar、Santhosh Penta、S. P. Mahapatra、Subhash Banerjee
DOI:10.1080/00397911.2019.1686526
日期:2020.1.2
Abstract An acid-functionalized magnetic ionic liquid, 1-acyl-3-methylimidazolium tetrachloroferrate, [AcMIm]-FeCl4 has been utilized for the synthesis of a series of novel highly functionalized coumarinyl-pyrido[2,3-d]pyrimidine-2,4-dione derivatives (3a-3l) by the reactions of various 3-chloro-3-(2-oxo-2H-chromen-3-yl)acrylaldehydes (1) with functionalized aryl, 6-aminouracils. The major significant
摘要 酸官能化磁性离子液体 1-acyl-3-methylimidazolium tetrachloroferrate, [AcMIm]-FeCl4 已被用于合成一系列新型的高官能化香豆素-吡啶并[2,3-d]嘧啶-2, 4-二酮衍生物 (3a-3l) 通过各种 3-chloro-3-(2-oxo-2H-chromen-3-yl) 丙烯醛 (1) 与官能化的芳基 6-氨基尿嘧啶反应。本程序的主要意义是使用特定任务的酸性离子液体作为催化剂和反应介质,从而避免使用有机溶剂和/或质子酸催化剂。该协议的其他主要优点是 (i) 更短的反应时间 (1 小时), (ii) 简单的后处理程序, (iii) 优异的产品收率 (91-94%) 和 (iv) 催化剂的可回收性。化合物 (3a-3l) 使用 FT-IR、1H NMR、和 13C 核磁共振和质谱研究。图形概要