Related Products of 246047-72-3, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 246047-72-3, Name is (1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene)dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium, molecular formula is C46H65Cl2N2PRu. In a Article£¬once mentioned of 246047-72-3
A new route to vitamin E Key-intermediates by olefin cross-metathesis
Ru-Catalyzed olefin cross-metathesis (CM) has been successfully applied to the synthesis of several phytyl derivatives (2b, 2d-f, 3b) with a trisubstituted C=C bond, as useful intermediates for an alternative route to alpha-tocopheryl acetate (vitamin E acetate; 1b) (Scheme 1). Using the second-generation Grubbs catalyst RuCl2(C21H 26N2)(CHPh)PCy3, (Cy = cyclohexyl; 4a) and Hoveyda-Grubbs catalyst RuCl2(C21H26N 2){CH-C6H4(O-iPr)-2} (4b), the reactions were performed with various C-allyl (5a-f, 7a,b) and O-allyl (8a-d) derivatives of trimethylhydroquinone-1-acetate as substrates. 2,6,10,14-Tetramethylpentadec-1-ene (6a) and derivatives 6c-e of phytol (6b) as well as phytal (6f) were employed as olefin partners for the CM reactions (Schemes 2 and 5). The vitamin E precursors could be prepared in up to 83% isolated yield as (E/Z)-mixtures.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 246047-72-3 is helpful to your research., Related Products of 246047-72-3
Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI