作者:Jan Svĕtlík、Lucia Veizerová
DOI:10.1002/hlca.201000193
日期:2011.2
A Biginelli‐type condensation using Meldrum's acid has been accomplished in refluxing AcOH to give 6‐substituted dihydropyrimidine‐2,4‐(1H,3H)‐diones. In contrast to other aldehydes, the three‐component reaction with salicylaldehyde led to an oxygen‐bridged pyridine. A reaction mechanism is proposed.
使用Meldrum酸进行的Biginelli型缩合反应已在回流的AcOH中完成,得到了6个取代的二氢嘧啶-2,4-(1 H,3 H)-二酮。与其他醛相反,与水杨醛的三组分反应导致氧桥联吡啶。提出了一种反应机理。