Switchable activity of a Ru catalyst bearing an annulated mesoionic carbene ligand for oxidation of primary amines
作者:Suman Yadav、Saikat Pal、Nilay Kumar Pal、Noor U Din Reshi、Sourav Pal、Jitendra K. Bera
DOI:10.1002/aoc.6594
日期:——
mesoionic carbene (MIC) ligand, is examined for the oxidation of primary amines. Complex 1 affords nitrile or imine depending on the nature of the terminal oxidants and solvents used in the reactions. Primary amines are converted to nitriles using NaIO4 in EtOAc/H2O mixture, whereas imines are obtained under O2 balloon pressure in toluene. A variety of nitriles and imines are accessed with high yields and
带有稠合π-共轭咪唑并[1,2- a ][1,8]萘啶基介离子卡宾(MIC)配体的Ru配合物1的催化活性被检测为伯胺的氧化。配合物1提供腈或亚胺,具体取决于反应中使用的末端氧化剂和溶剂的性质。使用NaIO 4在EtOAc/H 2 O混合物中将伯胺转化为腈,而亚胺则在O 2气球压力下在甲苯中获得。以高产率和选择性获得多种腈和亚胺。进行了一系列控制实验、反应曲线和动力学研究,以揭示腈和亚胺形成的机制细节。催化反应说明了伯胺氧化过程中对氧化剂和溶剂选择的微妙依赖性。