Nickel-Catalyzed Alkylation of Ketone Enolates: Synthesis of Monoselective Linear Ketones
作者:Jagadish Das、Mari Vellakkaran、Debasis Banerjee
DOI:10.1021/acs.joc.8b02609
日期:2019.1.18
Herein we have developed a Ni-catalyzed protocol for the synthesis of linear ketones. Aryl, alkyl, and heteroaryl ketones as well as alcohols yielded the monoselective ketones in up to 90% yield. The catalytic protocol was successfully applied in to a gram-scale synthesis. For a practical utility, applications of a steroid derivative, oleyl alcohol, and naproxen alcohol were employed. Preliminary catalytic
A base-controlled chemoselective transfer hydrogenation of α,β-unsaturated ketones catalyzed by [IrCp*Cl<sub>2</sub>]<sub>2</sub> with 2-propanol
作者:Shu-jie Chen、Guo-ping Lu、Chun Cai
DOI:10.1039/c5ra00484e
日期:——
A simple homogeneous catalyst system based on commercially available [IrCp*Cl2]2 has been developed for the transfer hydrogenation of α,β-unsaturated ketones.
From selective transfer hydrogenation to selective hydrogen auto-transfer process: An efficient method for the synthesis of alkenyl ketones via iridium-catalyzed α-alkylation of ketones with alkenyl alcohols
作者:Xiangchao Xu、Chenchen Yang、Shun Li、Chong Meng、Junjie Yu、Jiazhi Yang、Feng Li
DOI:10.1016/j.jcat.2021.08.038
日期:2021.10
in the ligand are crucial for the activity of catalyst and selective transfer hydrogenation is the determining step of the formation of alkenyl ketones as products. Notably, the present research exhibited also the unique potential of metal–ligand bifunctional catalysts for the activation of unsaturated alcohols as electrophiles for hydrogen auto-transfer process.
SNS-based ruthenium pincer catalysts were applied in a Guerbet condensation reaction of primary alcohols to give β-alkylated dimeric alcohols in good yields. The ability of these complexes to convert ethanol into butanol was also investigated. The work was then extended toward the C-alkylation of secondary alcohols with primary alcohols to give α-alkylated ketones. Several control experiments showed
Scope and Mechanism of the Ruthenium-Catalyzed Deaminative Coupling Reaction of Enones with Amines via Regioselective C<sub>α</sub>–C<sub>β</sub> Bond Cleavage
作者:Dulanjali S. Thennakoon、Marat R. Talipov、Chae S. Yi
DOI:10.1021/acs.organomet.3c00321
日期:2023.10.9
A highly regioselective C–C bond cleavage method of enones has been devised from the ruthenium-catalyzed deaminative coupling reaction with simple amines. The analogous catalytic coupling reaction of enones with anilines has led to a regioselective Cα–Cβ bond cleavage of enones in forming N-alkylanilines and 2,4-disubstituted quinolines. The reaction profile study showed the formation of a β-aminoimine