Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

An Ideal Candidate for Sustainable Catalysis

16.09.2010
Convenient phenol oxidation with iron and hydrogen peroxide

The development of environmentally friendly and efficient catalysts is a major challenge in the field of chemical research, with the focus now being placed on the search for inexpensive metal catalysts.

At the Leibniz Institute for Catalysis (LIKAT) in Rostock, Matthias Beller, the first recipient of the newly launched European Sustainable Chemistry Award, and his group investigate many aspects of applied homogeneous catalysis and some of his latest results on iron catalysis are highlighted on the cover of a recent issue of Chemistry—A European Journal.

In Matthias Beller's own words "catalysis is the science that tries to explain how chemical reactions can be accelerated and controlled. It is one of the key technologies for creating a sustainable chemistry.” Already today catalysis enables the manufacture of a wide range of products; in fact more than 80% of all chemical products produced in industry, be it in the field of pharmaceuticals, agrochemistry or polymer chemistry (to name but a few), involve catalysts at some stage in the process of their manufacture.

Quinones are industrially relevant compounds, as they are used as antioxidants in food, medical treatments, and cosmetics. Up to now one of the main industrial processes for the production of this class of compounds involves the use of stoichiometric amounts of copper. This results in large amounts of copper waste and product contamination. Iron, on the other hand, is an ideal candidate for catalysis, because of its abundant availability and its relative non-toxicity compared to precious metals.

Beller and his co-workers have developed an iron-catalyzed oxidation of phenols and arenes to give 1,4-quinones. This novel selective oxidation reaction takes place under mild conditions (room temperature, alcoholic solvents) with hydrogen peroxide as benign terminal oxidant. It should be noted, that next to air, H2O2 is the most “green”, and waste-avoiding oxidant. Applying the inexpensive and practical catalyst system consisting of iron trichloride hexahydrate, pyridine-2,6-dicarboxylic acid, and benzylamine co-ligands, the industrially important oxidation reactions of 2,3,6-trimethylphenol and 2-methylnaphthalene took place in 79% and 55% yield, respectively. The work represents just one of many steps that Beller's group are taking "en route" towards more sustainable industrial chemical processes.

Author: Matthias Beller, Leibniz-Institut für Katalyse/Universität Rostock (Germany), http://www.catalysis.de/Beller-Matthias.239.0.html

Title: Selective Iron-Catalyzed Oxidation of Phenols and Arenes with Hydrogen Peroxide: Synthesis of Vitamin E Intermediates and Vitamin K3

Chemistry - A European Journal 2010, 16, No. 34, 10300–10303, Permalink to the article: http://dx.doi.org/10.1002/chem.201001429

Matthias Beller | Wiley-VCH
Further information:
http://www.catalysis.de/Beller-Matthias.239.0.html
http://pressroom.chempubsoc.eu

More articles from Life Sciences:

nachricht Could this protein protect people against coronary artery disease?
17.11.2017 | University of North Carolina Health Care

nachricht Microbial resident enables beetles to feed on a leafy diet
17.11.2017 | Max-Planck-Institut für chemische Ökologie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>