Grubbs catalyst
Category: Reagents & Chemicals
Grubbs catalysts are indeed a family of ruthenium-based catalysts used in olefin metathesis, which rearranges carbon-carbon double bonds in alkenes. They’re known for their ability to tolerate a wide range of functional groups, making them versatile tools in organic synthesis, particularly in the creation of complex molecules.
Named after Nobel laureate Robert H. Grubbs.
There are several generations of Grubbs catalysts, each with improved activity and stability:
| Generation | Structure Highlights | Key Features |
|---|---|---|
| First | Ru with phosphine ligands | Air-stable, tolerant to many functional groups |
| Second | Ru with N-heterocyclic carbene (NHC) ligands | Higher activity, broader substrate scope |
| Third | Modified NHC ligands | Enhanced efficiency, used in demanding conditions |
Applications in Organic Chemistry
Grubbs catalysts are widely used in:
- Ring-closing metathesis (RCM) – forming cyclic alkenes
- Cross metathesis (CM) – joining two different alkenes
- Ring-opening metathesis polymerization (ROMP) – creating polymers from cyclic monomers