A sustainable, new synthesis of oxalamides, by acceptorless dehydrogenativecoupling of ethylene glycol with amines, generating H2, homogeneously catalyzed by a rutheniumpincercomplex, is presented. The reverse hydrogenation reaction is also accomplished using the same catalyst. A plausible reaction mechanism is proposed based on stoichiometric reactions, NMR studies, X-ray crystallography as well
Oxalsäurederivate durch oxidative kupplung von kohlenmonoxid an nickel
作者:Heinz Hoberg、F. Javier Fañanás、Hans Josef RiegeI
DOI:10.1016/s0022-328x(00)99113-7
日期:1983.9
Carbon monoxide is oxidatively coupled by ligand nickel(II) compounds with secondary, primary amines and with alkali alkoxides to give oxalic acid derivatives. In the case of secondary amines the CO coupling can be run catalytically by adding oxidants like copper(II) salts. The yield of oxalic esters depends on the types of ligands and anions.
A new process for converting secondary amines into N,N,N′,N′-tetraalkyloxamides under CO pressure, catalyzed by homogeneous palladium complexes in the presence of 1,4-dichloro-2-butene (DCB) as an ...
一种在 CO 压力下将仲胺转化为 N,N,N',N'-四烷基草酰胺的新方法,在 1,4-二氯-2-丁烯 (DCB) 存在下,均相钯配合物催化...
Switchable Palladium-Catalyst Reaction of Bromomethyl Sulfoxides, CO, and N-Nucleophiles: Aminocarbonylation at Csp<sup>3</sup> versus Oxidative Carbonylation of Amines
作者:Cristian Mollar、Carmen Ramirez de Arellano、Mercedes Medio-Simón、Gregorio Asensio
DOI:10.1021/jo301778n
日期:2012.11.2
primary or secondary amines. The reaction with ambident nucleophiles such as amino alcohols was highly selective and took place exclusively at the amino group despite the presence of the alcohol functionality. In parallel to the reaction paths for simple amines, amino alcohols were converted into hydroxysulfinyl amides when the reaction was catalyzed by Pd-xantphos, while Pd(PPh3)4 catalyst afforded cyclic
An Evaluation of Some Hindered Diamines as Chiral Modifiers of Metal-Promoted Reactions
作者:Jayamini Illesinghe、Richard Ebeling、Brett Ferguson、Jim Patel、Eva M. Campi、W. Roy Jackson、Andrea J. Robinson
DOI:10.1071/ch03238
日期:——
coordinate to osmium. Less hindered analogues of these ligands were prepared and some were shown to act as ligands in dihydroxylation reactions but with poor enantioselectivity (e.e. < 10%). The diamines have also been briefly evaluated as ligands in rhodium-catalyzed hydroformylation and copper-catalyzed phenolic coupling reactions. Once again, only low enantioselectivity was obtained.