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...
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
An improved catalyst for the asymmetric arylation of ketone enolates A new catalyst system for the enantioselective alpha-arylation of ketones is reported. This catalyst, prepared from Pd(2)(dba)(3) and a bulky dialkylphosph... T Hamada,A Chieffi,J Ahman,... - 《Journal of the American ...
Novel synthesis of .alpha.,.beta.-unsaturated ketones by the palladium-catalyzed arylation of ketenes with aroyl chlorides or the decarbonylative cross-con... Novel synthesis of .alpha.,.beta.-unsaturated ketones by the palladium-catalyzed arylation of ketenes with aroyl chlorides or the de...
The mechanism is proposed to proceed through initial ortho-arylation of α-chloroketone 183 onto amidine 182, ring closing through a seven-membered rhodium metallocycle, and elimination of ammonia. Amidine 182 can be directly substituted with ketones, olefins, and heterocycles, while the arene on ...
ChemInform Abstract: β-Functionalization of α,β-Unsaturated Acetals via 1-Alkoxyallyltriphenylphosphoranes ChemInform Abstract: β-Functionalization of α,β-Unsaturated Acetals via 1-Alkoxyallyltriphenylphosphoranesalkylation, arylation, dealkylation, dearylation, C......
ChemInform Abstract: I2—CF3SO3H Synergistic Promoted sp3 C—H Bond Diarylation of Aromatic Ketones. I2/TfOH-Mediated treatment of aryl methyl ketones with some electron-rich arenes such as N,N-dialkylanilines and N-substituted pyrroles allows an efficient... YP Zhu,FC Jia,MC Liu,... ...
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....
ChemInform Abstract: REACTIONS OF ORGANIC ANIONS PART 56, CATALYTIC ALKYLATION OF SOME KETONES WITH ALPHA-CHLOROETHERS IN AQUEOUS MEDIUMpolyphenylalkene derivatives (stilbene derivativesalkylation, arylation, dealkylation, dearylation, C‐acylation, olefination...