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707961 Sigma-Aldrich

Grubbs Catalyst® C833


Synonym: Dichloro(PCy3)[(tricyclohexylphosphoranyl)methylidene]Ru tetrafluoroborate, Dichloro(tricyclohexylphosphine)[(tricyclohexylphosphoranyl)methylidene]ruthenium(II) tetrafluoroborate, Piers 1st generation metathesis catalyst




Cationic 4-coordinate catalyst is considered “pre-activated” because no ligand dissociation is required for formation of the active catalytic species. Has reactivity profile similar to Grubbs Catalyst® 1st Generation but is active at much lower temperatures (below 0 °C).


100, 500 mg in glass bottle

2 g in glass bottle

Other Notes

Grubbs Catalyst® Technology for Olefin Metathesis by Aldrich

Legal Information

This product is subject to US patent 7,365,140 and associated foreign equivalents thereof. This product includes a limited one-time, non-exclusive, non-transferable license to use the Product for research purposes only. It is the sole responsibility of buyer to ensure that its use of the product does not infringe the rights of others. For questions, please contact us at aldrich@sial.com

Grubbs Catalyst is a registered trademark of Umicore

Safety & Documentation

Safety Information

GHS02  GHS02
Signal word 
Hazard statements 
Precautionary statements 
UN1325 - class 4.1 - PG 2 - Flammable solids, organic, n.o.s., HI: all
WGK Germany 


Certificate of Analysis

Protocols & Articles


Grubbs Group - Professor Product Portal

From our library of Articles, Sigma-Aldrich presents Grubbs Group - Professor Product Portal
Keywords: Catalysis, Cross metathesis, Dihydroxylations, Ligands, Metathesis, Nuclear magnetic resonance spectroscopy, Olefin metathesis, Pharmaceutical, Spectroscopy, transformation

Ring-Closing Alkyne Metathesis

Alkyne metathesis has been a useful tool for C–C bond formation since the discovery of structurally well-defined metal alkylidynes by Schrock and coworkers.2 These complexes have found use in the syn...
Keywords: Alkyne metathesis, Cross metathesis, Materials Science, Metathesis, Ring-closing cross metathesis

Ring-Closing Metathesis | Aldrich ChemFiles 2009, 9.6, 4.

Ring-closing metathesis has become an essential tool for C-C bond formation as demonstrated by the profound impact on total synthesis in recent years.1 The first examples date back to 1980 and involv...
William Sommer
Aldrich ChemFiles 2009, 9.6, 4.
Keywords: C-C bond formation, Cyclizations, Metathesis, Ring-closing metathesis

Related Content

Metathesis in Chemical Synthesis

Olefin metathesis is now a well-entrenched synthetic technique, and is a powerful method for the clean construction of innumerable classes of chemical architectures. The broadly accepted belief that ...
Keywords: Building blocks, Cross metathesis, Enyne metathesis, Exothermic, Isomerizations, Ligands, Living polymerization, Metathesis, Olefin metathesis, Organic synthesis, Polymerization reactions, Ring opening metathesis polymerisation, Ring-closing metathesis

Peer-Reviewed Papers


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