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 Transport of molecular motors into cilia
28.03.2017 | Aarhus University

nachricht Asian dust providing key nutrients for California's giant sequoias
28.03.2017 | University of California - Riverside

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 Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>