Abstract
The synthesis, characterization, and catalytic activity of two new complexes, 2a,b, featuring a sterically demanding NHC and two different phosphites are described. Complexes 2a,b display a mutually trans arrangement of the pi-acidic phosphite and the strong sigma-donor SIPr ligand (SIPr = N,N'-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene). The synergy between the phosphite and the NHC ligand was revealed in the RCM of challenging substrates leading to tetrasubstituted olefins where, in comparison to their phosphine-containing analogues, 2a,b allowed higher conversions of these challenging substrates.
Original language | English |
---|---|
Pages (from-to) | 6240-6247 |
Number of pages | 8 |
Journal | Organometallics |
Volume | 32 |
Issue number | 21 |
DOIs | |
Publication status | Published - 11 Nov 2013 |
Keywords
- RING-CLOSING METATHESIS
- CATALYZED OLEFIN METATHESIS
- INDENYLIDENE COMPLEXES
- CARBENE LIGANDS
- TETRASUBSTITUTED OLEFINS
- BEARING
- POLYMERIZATION
- MECHANISM
- SOLVENT
- REACTIVITY