10.1021/ol802728t.s001
Chayanant Hongfa
Chayanant
Hongfa
Haw-Lih Su
Haw-Lih
Su
Hassan S. Bazzi
Hassan S.
Bazzi
David E. Bergbreiter
David E.
Bergbreiter
Polyisobutylene-Anchored <i>N</i>-Heterocyclic Carbene Ligands
American Chemical Society
2009
NHC
PIB
complex
carbene precursors
2009-02-05 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Polyisobutylene_Anchored_i_N_i_Heterocyclic_Carbene_Ligands/2880844
The synthesis of polyisobutylene (PIB)-supported <i>N</i>-heterocyclic carbenes (NHCs) that are useful as ligands for recoverable/recyclable organometallic complexes is described. Both PIB-bound carbenes analogous to SIMes and IMes as well as carbene precursors bound to PIB via 1,2,3-triazoles by alkyne−azide couplings are described. Both Ag(I) and Ru(II) complexes of these carbenes are shown to be phase selectively soluble in heptane. Hoveyda−Grubbs second-generation catalysts containing a PIB-supported NHC have also been used to catalyze ring-closing metathesis.