2nd Generation Grubbs Dimethylvinyl Alkylidene Catalyst

by Jean-Baptiste Bourg on February 2, 2010

2nd Generation Grubbs Dimethylvinyl Alkylidene Catalyst

2nd Generation Grubbs Dimethylvinyl Alkylidene Catalyst
(PCy3 = tricyclohexylphosphine)
- CAS#: [253688-91-4]
- FW: 826.97
- Color: Brown
- Initiation temperature: >50 °C

Process Strengths Weaknesses
CM -Synthesis of 1,2-disubstituted olefins from terminal olefins
-Ethenolysis of internal olefins to make terminal olefins
-ADMET of unhindered terminal olefins
-Formation of trisubstituted olefins
-Electron-deficient substrates
-Hindered substrates
RCM -Synthesis of 1,2-disubstituted olefins -Tetra-substituted olefin-formation
-Hindered substrates
ROMP -Easier control and handling -Requires heating

 
This catalyst is a slightly less reactive and more economical 2nd generation Grubbs catalyst surrogate. It’s slower to initiate than the 2nd generation benzylidene catalyst, and is especially useful in exothermic ROMP applications and metathesis of highly reactive monomers.

ADMET – Acyclic Diene Metathesis
CM – Cross Metathesis
RCM – Ring Closing Metathesis
ROMP – Ring Opening Metathesis Polymerization

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