Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Katalysator zur asymmetrischen Olefinmetathese,

20.01.2010
Die homogen katalysierte Olefinmetathese hat sich in den vergangenen Jahrzehnten zu einem bedeutenden Wirtschaftszweig entwickelt und stellt eine am häufigsten eingesetzte Transformation in der modernen chemischen Synthese dar. Allerdings eignet sich die homogen katalysierte Olefinmetathese derzeit noch nicht für die asymmetrische Katalyse.

Bisher wurden im Bereich der Grubbs II Katalysatoren die folgenden Ansätze verfolgt: der Einsatz monodentaler nicht-funktionaler N-heterocyclischer Carbenliganden (NHC) mit chiralen Zentren im Imidazolring oder in der Seitenkette sowie der Einsatz funktionalisierter NHC auf Basis des 1,1’-Binaphthyls zur Bildung eines Chelatli-ganden. Jedoch haben die chiralen NHC bisher nicht die gewünschte Leistung in der asymmetrischen Katalyse erbracht. Der essentielle Nachteil der NHC zeigt sich bei der Enantiomerenverteilung der Produkte, welche die Erwartungen nicht erfüllt. Mit Hilfe des erfindungsgemäßen Verfahrens kann die Gewinnung enantiomerenreiner Produkte möglich werden. Im Gegensatz zu vielen synthetischen Ansätzen wird in biologischen Systemen oft totale Enantioselektivität erreicht.

Further Information: PDF

PVA Mecklenburg-Vorpommern AG
Phone: +49 (0)381/49 74 74 0

Contact
Moritz v. GrotthussDr. Rüdiger Werp

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=1882&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht New Lithium Salts of Pentafluorophenylamide Anions as Electrolytes in Lithium Ionic Batteries
18.04.2017 | TechnologieAllianz e.V.

nachricht Gratings on glass surfaces
28.03.2017 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

Im Focus: Autoimmune Reaction Successfully Halted in Early Stage Islet Autoimmunity

Scientists at Helmholtz Zentrum München have discovered a mechanism that amplifies the autoimmune reaction in an early stage of pancreatic islet autoimmunity prior to the progression to clinical type 1 diabetes. If the researchers blocked the corresponding molecules, the immune system was significantly less active. The study was conducted under the auspices of the German Center for Diabetes Research (DZD) and was published in the journal ‘Science Translational Medicine’.

Type 1 diabetes is the most common metabolic disease in childhood and adolescence. In this disease, the body's own immune system attacks and destroys the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fachtagung analytica conference 2018

15.01.2018 | Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

 
Latest News

Black hole spin cranks-up radio volume

15.01.2018 | Physics and Astronomy

A matter of mobility: multidisciplinary paper suggests new strategy for drug discovery

15.01.2018 | Life Sciences

New method to map miniature brain circuits

15.01.2018 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>