Christian Färber
University of Kassel
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Publication
Featured researches published by Christian Färber.
Chemical Science | 2010
Ulrich Siemeling; Christian Färber; Clemens Bruhn; Michael Leibold; Detlef Selent; Wolfgang Baumann; Moritz von Hopffgarten; Catharina Goedecke; Gernot Frenking
N-Heterocyclic carbenes (NHCs) are extremely valuable as nucleophilic organocatalysts. They are widely applied as ligands in transition-metal catalysed reactions, where they are known as particularly potent σ-donors. They are commonly viewed as workhorses exhibiting reliable, but undramatic, chemical behaviour. The N → Ccarbene π-donation stabilises NHCs at the expense of low reactivity towards nucleophiles. In contrast to NHCs, stable (alkyl)(amino)carbenes exhibit spectacular reactivity, allowing, for example, the splitting of hydrogen and ammonia and the fixation of carbon monoxide. NHCs have been judged to be electronically not suitable for showing similar reactivity. Here, we demonstrate that a ferrocene-based NHC is able to add ammonia, methyl acrylate, tert-butyl isocyanide, and carbon monoxide—reactions typical of (alkyl)(amino)carbenes, but unprecedented for diaminocarbenes. We also show that even the simplest stable diaminocarbene, C(NiPr2)2, adds CO. This reaction affords a β-lactam by a subsequent intramolecular process involving a C–H activation. Our results shed new light on the chemistry of diaminocarbenes and offer great potential for synthetic chemistry and catalysis.
Chemical Communications | 2009
Ulrich Siemeling; Christian Färber; Clemens Bruhn
European Journal of Inorganic Chemistry | 2009
Ulrich Siemeling; Christian Färber; Michael Leibold; Clemens Bruhn; Philipp Mücke; Rainer F. Winter; Biprajit Sarkar; Moritz von Hopffgarten; Gernot Frenking
Chemical Communications | 2012
Christian Färber; Michael Leibold; Clemens Bruhn; Martin Maurer; Ulrich Siemeling
Organometallics | 2016
Andrea Causero; Gerd Ballmann; Jürgen Pahl; Harmen S. Zijlstra; Christian Färber; Sjoerd Harder
European Journal of Inorganic Chemistry | 2012
Ulrich Siemeling; Christian Färber; Clemens Bruhn; Sven Fürmeier; Tim Schulz; Michael Kurlemann; Sandra Tripp
Chemical Communications | 2013
Tim Schulz; Christian Färber; Michael Leibold; Clemens Bruhn; Wolfgang Baumann; Detlef Selent; Timo Porsch; Max C. Holthausen; Ulrich Siemeling
Dalton Transactions | 2014
Stefan Rittinghaus; Christian Färber; Clemens Bruhn; Ulrich Siemeling
Organometallics | 2014
Sandra Hitzel; Christian Färber; Clemens Bruhn; Ulrich Siemeling
Chemical Communications | 2014
Tim Schulz; Christian Färber; Michael Leibold; Clemens Bruhn; Pascal Prochnow; Julia E. Bandow; Tanja Schneider; Timo Porsch; Max C. Holthausen; Ulrich Siemeling