67237-56-3Relevant academic research and scientific papers
Catalytic tail-to-tail selective dimerization of methyl methacrylate promoted by a ruthenium(0) complex
Hirano, Masafumi,Hiroi, Yuki,Komine, Nobuyuki,Komiya, Sanshiro
scheme or table, p. 3690 - 3693 (2010/12/20)
Ru(η6-naphthalene)(η4-1,5-COD) (1) (10 mol %) catalyzes the tail-to-tail dimerization of methyl methacrylate (MMA) in MeCN in 74% yield at 70 °C for 4 h. Without use of solvent complex 1 (1 mol %) rapidly catalyzes the tail-to-tail dimerization and trimerization of MMA in 59% and 23% yields, respectively, at 70 °C for 5 min.
On the Catalytic Dimerization of Acrylic Acid Derivatives by Palladium Complexes. IV. The Dimerization of Methyl Methacrylate
Oehme, G.
, p. 779 - 790 (2007/10/02)
Methyl methacrylate has been dimerized to a mixture of 2.5-di(methoxycarbonyl)-hex-1-ene (1) and (E)-2.5-di(methoxycarbonyl)-hex-2-ene (2) by catalytic systems containing dichlorobis (nitrile)-palladium(II) and silver tetrafluoroborate.Codimerization experiments with methyl acrylate show a lower reactivity of methyl methacrylate.Oxidative addition of β-chloro methyl methacrylate to tetrakis(triphenylphosphine)palladium(0) gave β-palladio methyl methacrylates (8,9) suitable for model investigations of the catalytic reaction.A proposal is given for a mechanism via Pd(IV) intermediates.
