Organophotocatalytic Aerobic Oxygenation of Phenols in a Visible‐Light Continuous‐Flow Photoreactor
作者:Joël Wellauer、Dragan Miladinov、Thomas Buchholz、Jan Schütz、René T. Stemmler、Jonathan A. Medlock、Werner Bonrath、Christof Sparr
DOI:10.1002/chem.202101313
日期:2021.7.7
A mild photocatalytic phenoloxygenation enabled by a continuous-flow photoreactor using visiblelight and pressurized air is described herein. Products for wide-ranging applications, including the synthesis of vitamins, were obtained in high yields by precisely controlling principal process parameters. The reactor design permits low organophotocatalyst loadings to generate singlet oxygen. It is anticipated
A novel m-CPBA oxidation: p-quinols and epoxyquinols from phenols
作者:Bogdan A. Šolaja、Dragana R. Milić、Miroslav J. Gašić
DOI:10.1016/0040-4039(96)00677-6
日期:1996.5
Steroidal quinols were obtained on large scale in 50–70% yield, together with syn-epoxyquinols. The reaction conditions can be adjusted to afford only the corresponding steroidal epoxyquinol in 51–54% yield.
Ruthenium-Catalyzed Oxidative Dearomatization of Phenols to 4-(tert-Butylperoxy)cyclohexadienones: Synthesis of 2-Substituted Quinones from p-Substituted Phenols
The ruthenium-catalyzedoxidation of phenols with tert-butylhydroperoxide efficiently gives the corresponding 4-(tert-butylperoxy)cyclohexadienones. The oxidation proceeds selectively because of ruthenium's ability for rapid single-electron transfer. This biomimetic oxidation reaction is highly useful to obtain the metabolic compounds desired for confirming the safety of medicines and related compounds