Open Access Article
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Expression of concern: Aza-Morita–Baylis–Hillman reactions catalyzed by a cyclopropenylidene
Philippa
Hughes
Royal Society of Chemistry, Thomas Graham House, Science Park, Milton Road, Cambridge, UK CB4 0WF. E-mail: ChemComm-rsc@rsc.org
First published on 6th April 2017
Abstract
Expression of concern for ‘Aza-Morita–Baylis–Hillman reactions catalyzed by a cyclopropenylidene’ by Xun Lu et al., Chem. Commun., 2016, 52, 12980–12983.
The following article ‘Aza-Morita–Baylis–Hillman reactions catalyzed by a cyclopropenylidene’ by Xun Lua and Uwe Schneider*a has been published in Chemical Communications. The article reports BAC-catalyzed C–C bond formations, which rely on a formal umpolung activation of Michael acceptor pro-nucleophiles.
The Royal Society of Chemistry has been contacted by the corresponding author of this article to inform us that his laboratory has been unable to reproduce several key results presented in this communication.
Chemical Communications is publishing this Expression of Concern in order to alert readers. An investigative process is on-going at the University of Edinburgh, and this notice will be updated when a final outcome has been reached.
Philippa Hughes
31st March 2017
Executive Editor, Chemical Communications
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