A General and Efficient Method To Convert Selenides into Selenones by Using HOF·CH<sub>3</sub>CN
作者:Shay Potash、Shlomo Rozen
DOI:10.1002/ejoc.201300694
日期:2013.9
A general route for the preparation of selenones (R2SeO2) is presented. This task is achieved through the quick and high-yielding reaction of selenides (R2Se) with HOF·CH3CN. The reaction tolerates some elusive electron-deficient and sterically hindered selenides. Some mechanistic aspects are also investigated and discussed.
Novel synthesis of selenones: Application to the synthesis of alkyl cyclopropanecarboxylates
作者:A. Krief、W. Dumont、A.F. De Mahieu
DOI:10.1016/0040-4039(88)85139-6
日期:1988.1
Selenones are prepared by oxidation of selenides by hydrogen peroxide-benzeneseleninic acid. They react with α, β -unsaturated esters and alkylidene malonates in the presence of t-BuOK and produce alkyl Cyclopropanecarboxylates.
Deoxygenation of sulfoxides, selenoxides, telluroxides, sulfones, selenones and tellurones with Mg–MeOH
作者:Jitender M. Khurana、Vandana Sharma、Silvi A. Chacko
DOI:10.1016/j.tet.2006.11.027
日期:2007.1
The deoxygenation of a variety of sulfoxides, selenoxides, telluroxides, sulfones, selenones and tellurones has been reported with Mg–MeOH at room temperature in nearly quantitative yields. The deoxygenation is proposed to proceed by SET from Mg to the substrate.
Corey–Chaykovsky Cyclopropanation of Nitronaphthalenes: Access to Benzonorcaradienes and Related Systems
作者:Damian Antoniak、Michał Barbasiewicz
DOI:10.1021/acs.orglett.9b03375
日期:2019.12.6
derivatives react as Michael acceptors in the Corey-Chaykovsky reaction with alkylphenylselenones and alkyl diphenyl sulfonium salts. Mechanistic studies reveal that sterically demanding substituents at the carbanionic center favor formation of cyclopropanes and suppress competitive β-elimination to the alkylated products. The transformation, demonstrated also on heterocyclic nitroquinoline and nitroindazolines