Issue 2, 2014

N-heterocyclic silylene complexes in catalysis: new frontiers in an emerging field

Abstract

The present account is a review of all N-heterocyclic silylene (NHSi) transition metal complexes that have been employed in catalytic transformations, reported up to the present time (2013). NHSi transition metal complexes now enjoy indefatigable attention since their facile isolation was realised by the report of the first isolable NHSis by West and Denk in 1994. Despite considerable research activity since then, in comparison to ubiquitous N-heterocyclic carbene (NHC) complexes, NHSi complexes are still comparatively rare. Accordingly, in comparison to the plethora of reports associated with NHC complexes, implicated in catalytic processes, only scant examples exist for NHSi complexes. Some of these reports include Heck or Suzuki type coupling, alkyne cyclotrimerisation, ketone hydrosilylation, amide reduction or Sonogashira cross-coupling reactions, and are discussed in detail here. These endeavours pave the way for new families of catalysts based on NHSis and highlight the potential future applications of these emerging and rather unexplored complexes in novel catalytic processes.

Graphical abstract: N-heterocyclic silylene complexes in catalysis: new frontiers in an emerging field

Article information

Article type
Review Article
Submitted
23 okt 2013
Accepted
05 dec 2013
First published
13 jan 2014

Inorg. Chem. Front., 2014,1, 134-148

Author version available

N-heterocyclic silylene complexes in catalysis: new frontiers in an emerging field

B. Blom, D. Gallego and M. Driess, Inorg. Chem. Front., 2014, 1, 134 DOI: 10.1039/C3QI00079F

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