Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘angewandte chemie’ Category

50 years later, is it time to retract a retraction by a Nobel prize-winning author?

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Georg Wittig

Georg Wittig

It’s not often that an article is retracted only to be later proven correct. But that may have happened this past summer in the chemistry literature.

In July, a group of researchers recapitulated an experiment largely similar to one that Nobelist Georg Wittig had performed – and subsequently retracted — decades earlier. Their findings suggest Wittig may actually have gotten it right the first time.

On July 27, Peter Chen of ETH Zurich and colleagues published an article online in the journal Angewandte Chemie International Edition that describes a new method for appending a carbon atom to an unsaturated hydrocarbon to create a three-membered ring – a useful chemical transformation known as cyclopropanation. Yet, it was not the first time researchers had reported such a process. As Chen and his colleagues note in the Israel Journal of Chemistry, Georg Wittig of the Ruprecht-Karls-Universität Heidelberg (who would go on to win the chemistry Nobel Prize in 1979) and Volker Franzen reported a similar reaction in 1960 in Angewandte Chemie, a German-language publication. Read the rest of this entry »

Written by Jeffrey Perkel

September 25th, 2015 at 11:30 am

Chemists Bielawski and Wiggins up to eight expressions of concern, one retraction

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bielawski

Christopher Bielawski

Two researchers who already had three expressions of concern under their belts have five more, plus a retraction.

Kelly Wiggins and Christopher Bielawski share authorship on all the papers in question. After the first set of EoCs, Bielawski, at the time a PI at UT Austin, told Chemistry and Engineering News that a “former lab member” had admitted to faking the data. The recent retraction indicates that University of Texas at Austin’s Office of Research Integrity formally investigated the lab, and determined that Bielawski was telling the truth about a former lab member being to blame.

Bielawski has since taken a post at Ulsan National Institute of Science and Technology in South Korea. He told us that move was unrelated to anything that happened at UT Austin, but declined to answer other questions. Wiggins got a postdoc at the University of Illinois, which an Illinois spokesperson confirmed lasted from July 1 2013 to January 22 2014; we’re waiting to hear back on our question about whether her departure had anything to do with misconduct.

Here’s the retraction notice for “A Mechanochemical Approach to Deracemization,” in Wiley journal Angewandte Chemie: Read the rest of this entry »

Chemistry journal and author retract paper dogged by questions since its publication in 2006

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A chemistry journal has retracted a 2006 paper that had knowledgeable researchers scratching their heads from the minute it was published.

Here’s the notice: Read the rest of this entry »

Written by Ivan Oransky

November 14th, 2012 at 3:45 pm