Synthesis of 3′,4′-Diaryl-4′<i>H</i>-spiro[indoline-3,5′-[1′,2′,4′]oxadiazol]-2-ones<i>via</i>DMAP-catalyzed Domino Reactions and Their Antibacterial Activity
作者:Guanghao Shi、Xinwei He、Yongjia Shang、Liwei Xiang、Cheng Yang、Guang Han、Bing Du
DOI:10.1002/cjoc.201600285
日期:2016.9
A convenient and metal‐free DMAP‐catalyzed domino reaction of isatins, arylamines and hydroximoyl chlorides has been developed to achieve 1,3‐dipolar cycloaddition of imines into aryl nitrile oxides at ambient temperature. In this one‐pot transformation, a 1,2,4‐oxadiazole skeleton was efficiently formed. This methodology needs no extra additives and features wide substrate scope, good functional group
已经开发了一种方便,无金属,由DMAP催化的靛红,芳基胺和羟肟基氯的多米诺反应,以在环境温度下将亚胺实现1,3-偶极环加成成芳基腈氧化物。在此一锅转换中,有效地形成了1,2,4-恶二唑骨架。这种方法不需要额外的添加剂,并且具有广泛的底物范围,良好的官能团耐受性和温和的反应条件。为此过程提出了一个合理的机制。此外,使用肉汤微稀释法评估了产品对表皮葡萄球菌,金黄色葡萄球菌,大肠杆菌和肺炎克雷伯菌的抗菌活性。