Diastereoselective Oxidative Carbon−Carbon Bond Formation via Silyl Bis-enol Ethers
作者:Christopher T. Avetta、Leah C. Konkol、Carla N. Taylor、Karen C. Dugan、Charlotte L. Stern、Regan J. Thomson
DOI:10.1021/ol802516z
日期:2008.12.18
Diisopropylsilyl bis-enol ethers are shown to be powerful intermediates for the diastereoselective dimerization and cross-coupling of cyclic ketones. The trends observed for the oxidative coupling of a range of different dialkylsilyl bis-enol ethers derived from cyclohexanone are rationalized by invoking a stereochemical model based on a Thorpe-Ingold effect.
Electrochemical and Photocatalytic Oxidative Coupling of Ketones via Silyl Bis-enol Ethers
作者:Aidan C. Caravana、Benjamin Nagasing、Sandeep Dhanju、Rebekah G. Reynolds、Emily A. Weiss、Regan J. Thomson
DOI:10.1021/acs.joc.1c00384
日期:2021.5.7
Diastereoselective oxidative coupling of ketones through a silyl bis-enol ether intermediate by anodic and photocatalytic oxidation is reported. These methods provide several 1,4-diketones in good yields without the need for stoichiometric metal oxidants. The strategic use of a silicon tether enables the coupling of both aromatic and aliphatic ketones as well as the synthesis of quaternary centers