InCl<sub>3</sub>/Me<sub>3</sub>SiBr-Catalyzed Direct Coupling between Silyl Ethers and Enol Acetates
作者:Yoshiharu Onishi、Yoshihiro Nishimoto、Makoto Yasuda、Akio Baba
DOI:10.1021/ol200875m
日期:2011.5.20
A combined Lewis acid catalyst of InCl3 and Me3SiBr promoted the direct use of enol acetates in the coupling with low-reactive silyl ethers, in which functional groups including ketones and aldehydes survived. Sterically hindered silyl ethers such as ROSiEt3, ROSiPh3, ROSit-BuMe2, and ROSii-Pr3 were also applicable.
Concerted Catalytic Reactions for Conversion of Ketones or Enol Acetates to Chiral Acetates
作者:Hyun M. Jung、Jeong H. Koh、Mahn-Joo Kim、Jaiwook Park
DOI:10.1021/ol9914043
日期:2000.2.1
[reaction: see text] Enol acetates or ketones asymmetrically transformed to chiral acetates in high yields with high optical purities through multistep reactions catalyzed by a lipase and a ruthenium complex. 2,6-Dimethylheptan-4-ol was chosen as a suitable hydrogen donor, and 4-chlorophenyl acetate was used as an acyl donor for the conversion of ketones.
InCl<sub>3</sub>/Me<sub>3</sub>SiCl-Catalyzed Direct Michael Addition of Enol Acetates to α,β-Unsaturated Ketones
作者:Yoshiharu Onishi、Yuki Yoneda、Yoshihiro Nishimoto、Makoto Yasuda、Akio Baba
DOI:10.1021/ol302888k
日期:2012.11.16
The direct Michael addition of enolacetates to α,β-unsaturated ketones was achieved using a combination of Lewis acid catalysts, InCl3 and Me3SiCl, which furnished stable enol-form products that could be further transformed into functionalized 1,5-diketones by reactions with various electrophiles.
Practical Ruthenium/Lipase-Catalyzed Asymmetric Transformations of Ketones and Enol Acetates to Chiral Acetates
作者:Hyun M. Jung、Jeong H. Koh、Mahn-Joo Kim、Jaiwook Park
DOI:10.1021/ol006169z
日期:2000.8.1
Ketones were asymmetrically transformed to chiral acetates by one-pot processes using a lipase and an achiral ruthenium complex under 1 atm of hydrogen gas in ethyl acetate. Molecular hydrogen was also effective for the transformation of enol acetates to chiral acetates without additional acyl donors with the same catalyst system.
Electrochemical Radical Reactions of Enol Acetates and Free Alcohols Directly Access to α-Alkoxylated Carbonyl Compounds
作者:Fan Wu、Yu Guo、Zihao Ren、Zixuan Chen、Xiaoqin Liu、Chang Wang、Liangce Rong
DOI:10.1021/acs.joc.3c00635
日期:2023.7.7
The efficient intermolecular alkoxylation reactions of various enolacetates and different alcohols are developed in the electrochemical process for the first time. Enolacetatesderivedfrom either aromatic, alkyl, or alicyclic ketones, and abundant free alcohols directly used in this synthetic strategy, make this transformation very valuable in synthesis and application in the future.