The following article from Advanced Synthesis & Catalysis, “Iron-Catalyzed Suzuki-Miyaura Cross-Coupling Reaction” by David Bézier and Christophe Darcel, published online on July 27, 2009, in Wiley InterScience (www.interscience.wiley.com), and in print in Volume 351, Issue 11+12, 2009, pages 1732--1736, has been retracted by agreement between the authors, the journal Editor, Joe P. Richmond, and Wiley-VCH Verlag GmbH & Co. KGaA. The retraction has been agreed due to the following.
Initially, the use of potassium fluoride 99% from Acros lead to complete conversion with aryl iodides and activated aryl bromides. With several batches of iron(III) chloride 99.99% the authors succeeded to reproduce those results and the blank tests without iron(III) chloride 99.99% did not lead to any conversion. Those tests were made several times with different substrates. However, attempts to repeat this work in two independent laboratories have been unsuccessful.
Therefore, the authors decided to re-examine the reaction, and more particularly to use different types of KF from different suppliers. The results are reported in the following table.
|Entry||Origin of KF||Blank reaction[a] without FeCl3 99.99%||With FeCl3 99.99%[a]|
|1||Acros 99% (original batch)||No conversion||Full conversion[b]|
|2||Alfa Aesar 99% anhydrous||No conversion||No conversion|
|3||Aldrich 99.99%||No conversion||No conversion|
|4||Acros 99% (new batch)||No conversion||No conversion|