Divergent and Selective Synthesis of 3-Alkylidene Oxindoles Using Pd-Catalyzed Multicomponent Reaction
作者:Pooja Soam、Debasish Mandal、Vikas Tyagi
DOI:10.1021/acs.joc.3c00994
日期:2023.8.4
and selective synthesis of (E)-3-alkylidene oxindole, which is a highly valuable framework due to its presence in biologically important molecules, via palladium-catalyzed multicomponent reaction of 3-diazo oxindole, isocyanide, and aniline has been developed. Further, the feasibility of the reaction was demonstrated by employing differently substituted 3-diazo oxindoles, isocyanides, and anilines
在此,通过 3-重氮羟吲哚、异氰化物和苯胺的钯催化多组分反应,发散性选择性合成了 ( E )-3-亚烷基羟吲哚,由于其存在于生物学上重要的分子中,因此是一种非常有价值的框架。发达。此外,通过使用不同取代的3-重氮吲哚、异氰化物和苯胺作为起始原料并以31-83%的分离收率获得相应的产物,证明了该反应的可行性。此外,还提出了一种合理的机制,并使用 DFT 计算进行了进一步研究,表明 Pd-卡宾配合物和烯酮亚胺中间体的形成是催化循环中的关键步骤。