(NHC)M Cores as Catalysts for the Olefin Aziridination Reaction (M = Cu, Ag, Au): Evidencing a Concerted Mechanism for the Nitrene Transfer Process
作者:Jorge Pérez-Ruíz、Pedro J. Pérez、M. Mar Díaz-Requejo
DOI:10.1021/acs.organomet.2c00310
日期:2022.11.28
Complexes of the form [(NHC)MCl] (M = coinage metal) have been evaluated as catalysts for the olefin aziridination reaction using PhI═NTs as the nitrene source, with moderate to high activity being found depending on the metal and the olefin. At variance with frequently employed copper catalysts with bi-, tri-, or tetradentate N-donor ligands, these monodentante C-donor ligands induce a remarkable
[(NHC)MCl](M = 铸币金属)形式的配合物已被评估为使用 PhI = NT 作为氮烯源的烯烃氮丙啶化反应的催化剂,根据金属和烯烃发现具有中等至高活性。与经常使用的具有双、三或四齿 N-供体配体的铜催化剂不同,这些单齿 C-供体配体在反应机制中产生显着影响。实验证据支持协同机制和不存在自由基中间体的提议,自由基中间体是参与这些氮烯转移反应的常见物种。