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Internal Olefins (internal + olefin)

Distribution by Scientific Domains
Chemistry100%
Distribution within Chemistry
General & Introductory Chemistry66%
Organic Chemistry33%

Selected Abstracts

Titelbild: Wacker-Type Oxidation of Internal Olefins Using a PdCl2/N,N -Dimethylacetamide Catalyst System under Copper-Free Reaction Conditions (Angew. Chem.

ANGEWANDTE CHEMIE, Issue 7 2010
7/2010)
Eine Wacker-Oxidation interner Alkene zu Ketonen wird von K. Kaneda et,al. in ihrer Zuschrift auf S.,1260,ff. beschrieben. Die Reaktion läuft in einer O2 -Atmosphäre in Gegenwart eines Palladium-Homogenkatalysators mit Wasser als Sauerstoffquelle ab. Im Bild "bewegt" sich die Reaktion durch ein Stundenglas, wobei sich die Reaktanten in das Produkt verwandeln. [source]

Wacker-Type Oxidation of Internal Olefins Using a PdCl2/N,N -Dimethylacetamide Catalyst System under Copper-Free Reaction Conditions,

ANGEWANDTE CHEMIE, Issue 7 2010
Takato Mitsudome Dr.
Innere Werte: Ein einfaches Katalysatorsystem bestehend aus PdCl2 und N,N -Dimethylacetamid (DMA) als Lösungsmittel vermittelt die Wacker-Oxidation interner Alkene. Dabei werden keine Kupferverbindungen benötigt, und es lassen sich vielfältige Substrate mit internen Doppelbindungen umsetzen. [source]

ChemInform Abstract: Highly Selective Catalyst Systems for the Hydroformylation of Internal Olefins to Linear Aldehydes.

CHEMINFORM, Issue 4 2002
Holger Klein
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]

Hydrogen/Deuterium Exchange Reactions of Olefins with Deuterium Oxide Mediated by the Carbonylchlorohydrido- tris(triphenylphosphine)ruthenium(II) Complex

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 9 2010
Sunny Kai San Tse
Abstract The catalytic properties of several ruthenium, osmium and rhodium hydride complexes for hydrogen/deuterium (H/D) exchange between olefins and deuterium oxide (D2O) were investigated. The most effective catalytic precursor was found to be the carbonylchlorohydridotris(triphenylphosphine)ruthenium(II) complex. Through H/D exchange between metal hydride and D2O, and reversible olefin insertion into an RuH(D) bond, protons attached to olefinic carbons and alkyl chains of olefins can all undergo H/D exchange with D2O. The catalytic reactions can be used to deuterate both terminal and internal olefins, for example, styrene, stilbene and cyclooctene. [source]

Highly Selective Hydroaminomethylation of Internal Alkenes To Give Linear Amines

CHEMISTRY - A EUROPEAN JOURNAL, Issue 35 2006
Moballigh Ahmed Dr.
Abstract The application of phenoxaphosphino-modified Xantphos-type ligands (1,9) in the rhodium-catalyzed hydroaminomethylation of internal olefins to give linear amines is reported. Excellent chemo- and regioselectivities have been obtained through the use of 0.1 mol,% [Rh(cod)2]BF4/0.4 mol,% xantphenoxaphos (1), providing a practical and environmentally attractive synthetic route for the preparation of amines from internal alkenes. For the first time, both functionalized internal olefins and mixtures of internal and terminal olefins have been converted highly selectively into linear amines. Investigations of the effects of the calculated natural bite angles of ligands on hydroaminomethylation shows that the regioselectivity for the linear product follows a similar trend to that seen in the hydroformylation of internal alkenes with the aid of these ligands. Hydroaminomethylation and each of its individual steps were monitored by high-pressure infrared spectroscopy. The results suggest that hydroaminomethylations take place by a sequential isomerization/hydroformylation/amination/hydrogenation pathway. [source]