Oxidation of α,β-Unsaturated Ketones by Organophotocatalysis Using Rhodamine 6G under Visible Light Irradiation: Insight into the Reaction Mechanism
作者:Eito Yoshioka、Hiroki Takahashi、Hideto Miyabe、Hikari Wanibe、Yukina Hontani、Kouki Hatsuse、Remi Shimizu、Akira Kawashima、Shigeru Kohtani
DOI:10.1055/a-1652-3370
日期:2022.2
In this organocatalysis, the mild co-oxidant bromotrichloromethane (BrCCl3) acts not only as a quencher toward the activated photocatalyst species, having reductant properties, but also as a brominating reagent for the intermediate radicals. This study shows that bromine atom transfer from BrCCl3 to intermediate radicals is a key step in the reaction mechanism of our oxidation method.
使用罗丹明 6G 作为有机光催化剂,在可见光诱导的光催化条件下研究了 α,β-不饱和酮的氧化转化。在这种有机催化中,温和的助氧化剂溴化三氯甲烷 (BrCCl3) 不仅作为具有还原剂性质的活化光催化剂物种的猝灭剂,而且作为中间自由基的溴化试剂。该研究表明,溴原子从 BrCCl3 转移到中间体自由基是我们氧化方法反应机理中的关键步骤。