Evaluation of Several Molybdenum and Ruthenium Catalysts for the Metathesis Homocoupling of 3‐Methyl‐1‐Butene

Evaluation of Several Molybdenum and Ruthenium Catalysts for the Metathesis Homocoupling of 3‐Methyl‐1‐Butene

We synthesized Mo(NC6F5)(CHCMe2Ph)(TPPO)(PPhMe2)Cl (TPPO = 2,3,5,6‐tetraphenylphenoxide), Mo(NC6F5)(CHCMe2Ph)(TTBTO)(PPhMe2)Cl (TTBTO = 2,6‐di(3′,5′‐di‐tert‐butylphenyl)phenoxide), and Mo(NC6F5)(CHCMe2Ph)(TPPO)(PPhMe2)(CF3Pyr) (CF3Pyr = 3,4‐bistrifluoromethylpyrrolide), in order to evaluate them as...

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Veröffentlicht in:Helvetica chimica acta 2017-10, Vol.100 (10), p.n/a
Hauptverfasser: Sues, Peter E., Bukhryakov, Konstantin V., Schrock, Richard R.
Format: Artikel
Sprache:eng
Schlagworte:
3‐Methyl‐1‐butene
Catalysis
Catalysts
Chemical synthesis
Homocoupling
Metathesis
Molybdenum
Olefin metathesis
Ruthenium
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Zusammenfassung:We synthesized Mo(NC6F5)(CHCMe2Ph)(TPPO)(PPhMe2)Cl (TPPO = 2,3,5,6‐tetraphenylphenoxide), Mo(NC6F5)(CHCMe2Ph)(TTBTO)(PPhMe2)Cl (TTBTO = 2,6‐di(3′,5′‐di‐tert‐butylphenyl)phenoxide), and Mo(NC6F5)(CHCMe2Ph)(TPPO)(PPhMe2)(CF3Pyr) (CF3Pyr = 3,4‐bistrifluoromethylpyrrolide), in order to evaluate them as catalysts for the homocoupling of 3‐methyl‐1‐butene. They were compared with Mo(NC6F5)(CHCMe2Ph)(HMTO)(PPhMe2)Cl (HMTO = 2,6‐dimesitylphenoxide), Mo(NC6F5)(CHCMe2Ph)(HIPTO)(PPhMe2)Cl (HIPTO = 2,6‐di(2′,4′,6′‐triisopropylphenyl)phenoxide), and several other Mo and Ru catalysts. In the best cases turnover numbers (TONs) of 400 – 700 were observed for the homocoupling of 3‐methyl‐1‐butene in a closed vessel (ethylene not removed).
ISSN:0018-019X
1522-2675
DOI:10.1002/hlca.201700181