TOWARDS DIRECT ALPHA-ARYLATION OF KETONES VIA OXIDATIVE UMPOLUNG OF ENOLATESShimon Maksymenko
ChemInform Abstract: Reaction of Silyl Enol Ethers with Arenediazonium Salts. Part 1. . alpha.-Arylation of Ketones.alkylation, arylation, dealkylation, dearylation, C゛cylation, olefinationthiophene derivativesketones (benzene compounds)ChemInform is a weekly Abstracting Service, delivering concise ...
Highly selective methods forα-alkenylation andα-arylation of ketones via palladium-or nickel-catalyzed cross coupling. Negishi E.I,Akiyoshi K. Chemistry Letters . 1987
A ligand and base-free copper catalyzed synthetic method for the efficient alpha-arylation of aromatic ketones is described. In order to avoid strong bases, ketone-derived silyl enol ethers were employed. Their reaction with diaryliodonium salts as aryl source provided the intermolecular C-C coupling...
A catalytic Friedel-Crafts arylation of α-hydroxyesters or α-hydroxyketones with electron-rich aromatic compounds to furnish α-quaternary esters/ketones has been developed. The cheap and easy to handle catalyst HClO4 (70 %, aq) was identified as a powerful catalyst for this arylation ...
2.Direct conversion of 13β-alkylgonatetraenes into 13β-alkylgon-4-en-3-ones Panicker Bijoy,Uma Ramachandran,G. S. R. Subba RaoJ. Chem. Soc. Perkin Trans. 1 1994 2331 3. Metal-free C–H thioarylation of arenes using sulfoxides: a direct, general diaryl sulfide synthesisJosé A. Fer...
PCP-Bis(phosphinite) pincer complexes:new homogeneous catalysts for α-arylation of ketones. Churruca, F,Martin, R. S,Tellitu, I,Dominguez, E. Tetrahedron Letters . 2006Churruca, F,Martin, R. S,Tellitu, I,Dominguez, E.PCP-Bis(phosphinite) pincer complexes:new homogeneous catalysts for ...
synthetic method for the alpha-arylation of ketones allows for the synthesis of previously inaccessible rocaglaol derivatives.The key sequence consists of a pre-viously unreported Suzuki type reaction using brominated si-lyl enol ethers as substrates followed by deprotection of the arylated silyl enol...
The invention relates to new ligands that are used in a palladium source catalyst system and in palladium catalyzed method for asymmetric α-(hetero)arylation and a-vinylation of ketones. The invention further relates to a process for preparing an asymmetric α-(hetero)arylated or a-vinylated ...
alkylation, arylation, dealkylation, dearylation, C‐acylation, olefinationDirect α-allylation of ketones catalyzed by a palladium(0)-diphosphine system took place employing O-allylisourea as the allylating reagent under neutral conditions at room temperature in DMF....