31955-56-3Relevant academic research and scientific papers
GROUP 8 TRANSITION METAL CATALYSTS AND METHOD FOR MAKING SAME AND PROCESS FOR USE OF SAME IN OLEFIN DISPROPORTIONATION REACTIONS
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Page/Page column 34; 35-36, (2017/12/09)
These catalyst compounds are represented by the formula (I and VI): wherein M is a Group 8 metal; X is an anionic ligand; L is a neutral two-electron donor ligand; A is a monotopic or ditopic chelating ligand. The present invention also relates to an easy applicable catalyst synthesis and the application in different olefin metathesis processes, e.g. Reaction Injection Molding (RIM), rotational molding, vacuum infusion, vacuum forming, process for conversion of fatty acids and fatty acid esters or mixtures thereof, in -olefins, dicarboxylic acids or dicarboxylic esters, etc.
Synthesis of (±)-3-methoxyestra-1,3,5(10)-trienes by the repetitive use of Negishi reagent
Herrmann, Pavel,Kotora, Martin,Budesinsky, Milos,Saman, David,Cisarova, Ivana
, p. 1315 - 1318 (2007/10/03)
The repetitive use of Cp2ZrBu2 (Negishi reagent) was applied in the synthesis of three 3-methoxyestra-1,3,5(10)-trienone isomers within four steps from the advanced intermediate 11. The overall synthesis is based on three zirconium-m
Copper-catalyzed allylations of zirconocene intermediates generated from o-alkenyl or o-alkynylbenzyl ether derivatives and zirconocene-butene complex
Ikeuchi, Yutaka,Taguchi, Takeo,Hanzawa, Yuji
, p. 756 - 759 (2007/10/03)
(Chemical Equation Presented) o-Alkenyl or alkynyl benzylzirconocene intermediate, which was readily generated by the reaction of 2-alkoxymethyl-styrene or 2-alkoxymethyl-1-(trimethylsilylethynyl)-benzene derivative with zirconocene-butene complex (Negishi reagent, "Cp 2Zr"), reacted with allyl or propargyl halides in the presence of a catalytic amount of CuCl to give allylation or allenylation products. Conversion to Dane's diene, which is a key intermediate for estrone synthesis, was efficiently carried out by enyne olefin metathesis of the allylation products.
