Microwaves in organic synthesis: Facile synthesis of biologically active pyridazinone and iminopyridazine derivatives
作者:Nadia Ragab Mohamed、Manal Mohamed Talaat El-Saidi、Yasser Mahmoud Ali、Mohamed Hilmy Elnagdi
DOI:10.1002/jhet.5570440615
日期:2007.11
arylhydrazones 2a,b by conventional and by microwave heating techniques furnished the corresponding pyridazines 3a-e. The arylhydrazones 7a,b were allowed to react with 1a,b under the same conditions to produce the pyridazinones 10a,b and iminopyridazines 11a,b respectively. On the other hand, the arylhydrazones 12a-c reacted with 1a to afford the pyridazinones 13a-c. Treatment of 3b with dimethylformamide
通过常规的和通过微波加热技术将维蒂希试剂1a,b与芳基hydr酮2a,b缩合,得到相应的哒嗪3a-e。使芳基azo酮7a,b在相同条件下与1a,b反应,分别制备哒嗪酮10a,b和亚氨基哒嗪11a,b。另一方面,芳基hydr酮12a-c与1a反应,得到吡啶并酮13a-c。用二甲基甲酰胺二甲基乙缩醛(DMFDMA)处理3b产生加合物15。微波加热技术的实用性使反应时间减少到几分钟,并提高了产物的产率。在体外对四种类型的真菌的一些新制备的化合物的生物活性进行了研究。