Navigation Links
Environmentally friendly chemistry important for manufacturing pharmaceuticals
Date:11/8/2012

Limiting the quantity of catalysts substances that trigger a chemical reaction used in the manufacture of pharmaceuticals is important, and research from the University of Gothenburg, Sweden, has now demonstrated that small quantities of copper work well in this respect.

"This is an important finding, not just academically but also for industry," says chemist Per-Fredrik Larsson.

Catalysis is an incredibly valuable tool in the field of chemistry, with the Haber-Bosch process being one of the most important catalytic processes in the world. It is used to manufacture fertilizer, and calculations show that without it the world's population would be just half of what it is today.

Precious metals are often used as catalysts in organic chemistry as they enable the production of many organic molecules with applications in areas such as pharmaceuticals and fine chemicals. As recently as 2010 Richard F. Heck, Ei-ichi Negishi and Akira Suzuki were awarded the Nobel Prize in Chemistry for their work on palladium catalysis.

"A problem with precious metals like palladium is that they are both expensive and harmful to the environment," says Per-Fredrik Larsson at the Department of Chemistry and Molecular Biology.

Recent years have seen researchers evaluating several different non-precious metals primarily iron and copper as cheap and environmentally friendly alternatives to precious metals.

"Iron catalysts have proven to be a competitive alternative to precious metals for a number of reactions," says Per-Fredrik Larsson. "An in-depth understanding of how these reactions work is incredibly important if we are to take this further. The results from our studies with iron led to several important insights into just how complex the chemistry can be."

Larsson's research group works not only with experimental methods but also with calculation models to understand how the chemistry works.

The trend for swapping precious metals for non-precious alternatives also has a flipside. It was discovered during experiments with iron catalysis in conjunction with professor Carsten Bolm of RWTH Aachen University in Germany that some reactions thought to be catalysed by iron had actually been catalysed by traces of copper in the commercially available iron source.

The fact that traces of copper could catalyse a number of different reactions was surprising as copper had previously been thought to be an ineffective catalyst requiring large quantities and high reaction temperatures.

"Our results show that copper has been given an undeservedly bad name as a catalyst," says Per-Fredrik Larsson. "Given that copper chemistry is over a century old, it's surprising that nobody's realised this before."

It is important in the pharmaceutical industry to limit the use of catalysts as the quantity of metal in the end-product is strictly regulated and the recovery process can be both difficult and expensive. As such, the finding that small quantities of copper can be used is an important discovery.

"We've developed and studied reactions with small quantities of copper and tried to understand how and why they work," says Per-Fredrik Larsson.

The results and conclusions for iron and copper catalysts are a major contribution to this field of research and are important for its continued development.


'/>"/>
Contact: Per-Fredrik Larsson
per-fredrik.larsson@chem.gu.se
46-031-786-9104
University of Gothenburg
Source:Eurekalert

Related medicine news :

1. Nanoparticles detect biochemistry of inflammation
2. UGA chemistry discovery could have major medical implications
3. Heroes of Chemistry: Developed new drugs and technology to cut heating and cooling bills
4. Government can play important role in obesity epidemic
5. Cancer turns off important immune cells, complicating experimental vaccine therapies
6. Timing of antibiotics important in reducing infections after C-section
7. An important breakthrough in immunology by IRCM researchers
8. Higher hospital volume more important than surgeon experience in outcome of prostate cancer surgery
9. Joslin scientists identify important mechanism that affects the aging process
10. Moffitt Cancer Center researchers: Quality of life as important as quantity of life
11. Timing pregnancy an important health concern for women
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/4/2016)... ... May 04, 2016 , ... Nike Rugby Camp's success is due ... Diego. Willis, founder of Elite Rugby Camps and current Nike Camp director, has offered ... since 2009. , ā€œIā€™m excited for our eighth summer here in San Diego,ā€ ...
(Date:5/4/2016)... ... ... Washington Wellness Center today announced its tenth anniversary of providing a complete approach to ... idea to provide a holistic approach to wellness has now become a growing trend ... Chiropractic Physician , the wellness center offers a complete range of services such ...
(Date:5/4/2016)... Watsonville, California (PRWEB) , ... May 04, 2016 ... ... powerful formulation of foundational nutrients that supports cellular and metabolic health. This synergistic ... and 400 mg free-form curcumin, along with 150 mg of reduced glutathione and ...
(Date:5/4/2016)... ... 04, 2016 , ... The preeminent surgical aftercare facility Pearl Recovery Retreat was ... surgery. In March 2016, the 61-year-old model and reality TV star was diagnosed with ... the milk ducts, according to an interview with the Daily Mail Online . ...
(Date:5/4/2016)... ... May 04, 2016 , ... Warren L. Smith M.D. , There ... UTIs, have plagued people since the beginning of recorded medical history, and in ... every year. It's not just a matter of inconvenience; bladder infections cost us billions ...
Breaking Medicine News(10 mins):
(Date:5/2/2016)... Leading Economies with Fastest Real GDP Annual Percentage Change, 2015  ... India 7.3, , Source: IMF and TechSci Research   ... Brazil , Russia , India ... registered the fastest GDP growth during the first decade of the 21 st ... Brazil and Russia , along with ...
(Date:5/2/2016)...  While nearly three-quarters of Americans (71%) are aware ... health, only about half report taking any steps to ... a new survey announced today by Hologic (Nasdaq: ... Osteoporosis Month, Hologic is raising awareness of this major ... Americans. Osteoporosis is a disease that causes ...
(Date:5/2/2016)... The global  ultrasound device ... by 2024, according to a new report published ... the sonography market include expanding applications of the ... periodic ultrasound screenings of the breast for breast ... ) High Intensity Focused Ultrasound (HIFU) ...
Breaking Medicine Technology: