<scp>l</scp>-Proline-catalysed three-component Cascade Reaction for the Facile Synthesis of 3,4-dihydro-2<i>H</i>-pyrano[3,2-<i>c</i>]quinolin-2,5(6<i>H</i>)-dione Derivatives
作者:Bai-Xiang Du、Yu-Ling Li、Wei Lin、Ming-Hua Hu、Zhi-Bin Huang、Da-Qing Shi
DOI:10.3184/174751912x13569668034930
日期:2013.2
A series of 4-aryl-3,4-dihydro-2H-pyrano[3,2-c]quinolin-2,5(6H)-dione derivatives was synthesised by the three-component reaction of aromatic aldehyde, quinoline-2,4-diol and Meldrum's acid catalysed by l-proline. This protocol has the advantages of easy work-up, mild reaction conditions and high yields.
通过芳醛、quinoline-2、2H-吡喃并[3,2-c]喹啉-2,5(6H)-二酮的三组分反应合成了一系列4-芳基-3,4-二氢-2H-吡喃并[3,2-c]喹啉-2,5(6H)-二酮衍生物。 4-二醇和由 l-脯氨酸催化的 Meldrum 酸。该方案具有操作简单、反应条件温和、收率高的优点。