An unprecedented photocatalytic system consisting of benzimidazolium aryloxide betaines (BI+-ArO-) and stoichiometric hydride reducing reagents was developed for carrying out desulfonylation reactions of N-sulfonyl-indoles, -amides, and -amines, and α-sulfonyl ketones. Measurements of absorption spectra and cyclic voltammograms as well as density functional theory (DFT) calculations were carried out
Photoinduced electron-transfer reaction between excited β-ketosulfones and ascorbic acid provides an efficient and green approach for the desulfonylation of β-ketosulfones.
A Convenient Method for Reductive Desulfonylation of β-Ketosulfones with Sm/HgCl<sub>2</sub>System
作者:Hongyun Guo、Yongmin Zhang
DOI:10.1080/00397910008087420
日期:2000.7
Abstract The Sm/HgCl2 system reduces β-ketosulfones to the corresponding ketones in moderate to good yield under mild conditions.
摘要 Sm/HgCl2 系统在温和条件下以中等至良好的收率将 β-酮砜还原为相应的酮。
Competitive Desulfonylative Reduction and Oxidation of α-Sulfonylketones Promoted by Photoinduced Electron Transfer with 2-Hydroxyaryl-1,3-dimethylbenzimidazolines under Air
Desulfonylation reactions of α-sulfonylketones promoted by photoinducedelectrontransfer with 2-hydroxyarylbenzimidazolines (BIH-ArOH) were investigated. Under aerobic conditions, photoexcited 2-hydroxynaphthylbenzimidazoline (BIH-NapOH) promotes competitive reduction (forming alkylketones) and oxidation (producing α-hydroxyketones) of sulfonylketones through pathways involving the intermediacy of