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 Warming ponds could accelerate climate change
21.02.2017 | University of Exeter

nachricht An alternative to opioids? Compound from marine snail is potent pain reliever
21.02.2017 | University of Utah

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Impacts of mass coral die-off on Indian Ocean reefs revealed

21.02.2017 | Earth Sciences

Novel breast tomosynthesis technique reduces screening recall rate

21.02.2017 | Medical Engineering

Use your Voice – and Smart Homes will “LISTEN”

21.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>