Chemistry - A European Journal
Chemistry - A European Journal
5 years ago

Cover Picture: Carboranes as Aryl Mimetics in Catalysis: A Highly Active Zwitterionic NHC-Precatalyst (Chem. Eur. J. 33/2017)

Cover Picture: Carboranes as Aryl Mimetics in Catalysis: A Highly Active Zwitterionic NHC-Precatalyst (Chem. Eur. J. 33/2017)
Evamarie Hey-Hawkins, Kirsten Zeitler, Wilma Neumann, Peter Lönnecke, Christoph Selg
A new offspring of the organocatalyst family has hatched from the merger of covalent catalysis and a carborane as an aryl-mimetic replacement: the novel zwitterionic triazolium based N-heterocyclic carbene (NHC) precatalyst bears a 7,8-dicarba-nido-undecaboranyl substituent (nidus (lat.)=nest) and offers excellent activity and broad applicability in a wide range of organocatalytic transformations. The straightforward synthesis and a detailed comparison to recent aryl-based precatalysts provides useful insights to pave the way for further development of this unprecedented class of catalysts. More information can be found in the Full Paper by K. Zeitler et al. on page 7932.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201701037

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