6975-99-1Relevant articles and documents
In situ Mo(CO)?-based catalysts for alkyne metathesis: Silanols vs phenols as co-catalysts under thermal and photochemical activation
Zaranek, Maciej,Robaszkiewicz, Jakub,Janica, Iwona,Gauvin, Regis M.,Pawlu?, Piotr,Mortreux, André
, (2020/03/03)
A systematic study on the use of silanols and phenols as effective activators in Mo(CO)? – based catalytic systems for metathesis of 4-decyne and 1-phenyl-1-propyne is reported. In comparison with traditionally used phenols, aryl-substituted silanols exhibit high activating potential of molybdenum species even at lower concentrations (2 mol% of Mo(CO)? and 4–20 mol% of silanol depending on the alkyne) at toluene reflux. Silylated phenols and silanols are also suitable as co-catalysts. Additionally, Mo(CO)?/silanol catalytic system is shown to be efficiently activated by UV-irradiation at room temperature, whereas it is less effective for metathesis reactions performed in the presence of phenols.
