Synthesis of New Dihydropyrimido[4,5-b]quinolinetrione Derivatives Using a Four-Component Coupling Reaction
作者:A. Khalafi-Nezhad、F. Panahi
DOI:10.1055/s-0030-1258446
日期:2011.3
A convenient and one-pot method for the efficient synthesis of the novel 8,9-dihydro-8,8-dimethyl-5,10-diphenylpyrimido[4,5-b]quinoline-2,4,6(1H,3H,5H,7H,10H)-trione derivatives via a four-component condensation reaction of aldehydes, amines, dimedone, and barbituric acid in the presence of tungestophosphoric acid (H3PW12O40) as catalyst is described. This new approach proceeded smoothly in good to
一种方便且一锅法的有效合成新型8,9-二氢-8,8-二甲基-5,10-二苯基嘧啶[4,5 - b ]喹啉-2,4,6(1 H,3描述了在作为催化剂的tungesto磷酸(H 3 PW 12 O 40)存在下,醛,胺,二甲酮和巴比妥酸通过四组分缩合反应生成的H,5 H,7 H,10 H)-三酮衍生物。该新方法顺利进行,收率良好,收率极高,通过简单的过滤即可将纯产物从反应混合物中分离出来。 多组分反应-嘧啶-二氢吡啶-巴比妥酸-二甲基酮