Home  About us  Contact
 

Highly Efficient Catalytic System (highly + efficient_catalytic_system)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

ChemInform Abstract: Highly Efficient Catalytic System for Electrophilic Amination of Arylzinc Reagents.

CHEMINFORM, Issue 19 2010
Tahir Daskapan
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Aerobic Oxidative Coupling of 2-Naphthols by Simple Copper Salts: A Highly Efficient Catalytic System in the Absence of Ligand or Carrier.

CHEMINFORM, Issue 48 2005
Shi-Yong Zhang
No abstract is available for this article. [source]

Highly efficient catalytic system for electrophilic amination of arylzinc reagents

APPLIED ORGANOMETALLIC CHEMISTRY, Issue 1 2010
Tahir Da, kapan
Abstract The effect of catalyst on the yield of amine in the amination of three classes of arylzinc reagents with acetone oxime O -tosylate was investigated. Since they allowed the preparation of arylamines in excellent yields in the presence of a minimum amount of copper (I) or copper (II) compounds, the catalytic systems using copper (I) or copper (II) combined with a P-, N- or S-donor ligand were revealed to be the best catalysts for the electrophilic amination of arylzinc reagents with acetone oxime O -tosylate in the presence of DMPU. Copyright © 2009 John Wiley & Sons, Ltd. [source]

Resorcin[4]arene-Derived Mono- and Diphosphines in Suzuki Cross-Coupling

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2010
Hani El Moll
Abstract Three resorcin[4]arene cavitands (1,3) having either one or two resorcinolic C-2 atoms substituted by a CH2PPh2 podand arm were assessed in the Suzuki arylation of aryl bromides with phenylboronic acid. Using P:Pd ratios of 2:1 and operating in dioxane at 100,°C with a catalyst loading of 0.001,mol% resulted in highly efficient catalytic systems. For example, TOFs up to 34570 mol(converted ArBr),mol(Pd),1,h,1 were obtained with the proximally-disubstituted cavitand 3 when using 4-bromotoluene as substrate. The performance was shown to vary in the following order: monophosphine 1[source]