Al2O3-supported Pd nanoclusters with an average particle size of 1.8 nm act as a reusable catalyst for the selective cross-coupling of amines. The reaction is a structure-sensitive reaction, demanding coordinatively unsaturated Pd atoms on a metallic nanocluster. The support also affects the activity, an amphoteric oxide (Al2O3) is most effective.
A ligand controlled catalytic system for the aerobicoxidation of 1[degree] amines to nitriles and imines has been developed where the varying [small pi]-acidic feature of BIAN versus phen in the frameworks of ruthenium catalysts facilitates switchable selectivity.
Heterogeneous copper-catalyzed coupling of amines: a possible way for the preparation of imines
作者:Ágnes Magyar、Zoltán Hell
DOI:10.1007/s00706-016-1784-9
日期:2016.9
AbstractCopper(II) on 4-Å molecular sieves is an efficient catalyst for the preparation of imines from benzylamines under simple reaction conditions. No oxidative atmosphere or oxidizing agents are required. Preparative experiments showed that no aldehyde intermediate can be detected even under ambient atmospheric conditions. Graphical abstract
A Simple and Convenient Method for the Synthesis of Nitriles by Oxidation of Primary Amines with NaOCl in Ethanol
作者:Shigekazu Yamazaki
DOI:10.1080/00397919708007077
日期:1997.10.1
Abstract The oxidation of aliphatic primary amines having α-methylene on treatment with NaOCl as an oxidant in ethanol has been found to be an effective method for the transformation of primary amines to nitriles.
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 primaryamines. Complex 1 affords nitrile or imine depending on the nature of the terminal oxidants and solvents used in the reactions. Primaryamines 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。