Ru(II)-Catalyzed C–H Functionalization of 2-Arylbenzimidazoles with Iodonium Ylides: A Straightforward Access to Bridgehead Polycyclic N-Heterocycles
作者:Saiprasad Nunewar、Sanjeev Kumar、Akhilesh Waman Meshram、Vinaykumar Kanchupalli
DOI:10.1021/acs.joc.2c01429
日期:2022.11.4
rylimidazoles with iodonium ylides leading to substituted tetracyclic and pentacyclic bridgehead N-heterocycles, wherein iodonium ylide acts as a carbene precursor. For the first time, iodonium ylide proceeds through a Ru–carbenoid intermediate. Further, the synthetic utility of this protocol was successfully shown for gram-scale synthesis and useful synthetic transformations.
在此,我们公开了一种有效的钌催化的 2-芳基苯并咪唑/2-芳基咪唑与碘鎓叶立德的 C-H 官能化,产生取代的四环和五环桥头 N-杂环,其中碘鎓叶立德作为卡宾前体。碘鎓叶立德第一次通过 Ru-carbenoid 中间体进行。此外,该协议的合成效用成功地展示了克级合成和有用的合成转换。