Protocol for Visible-Light-Promoted Desulfonylation Reactions Utilizing Catalytic Benzimidazolium Aryloxide Betaines and Stoichiometric Hydride Donor Reagents
作者:Eietsu Hasegawa、Tsukasa Tanaka、Norihiro Izumiya、Takehiro Kiuchi、Yuuki Ooe、Hajime Iwamoto、Shin-ya Takizawa、Shigeru Murata
DOI:10.1021/acs.joc.0c00038
日期:2020.3.20
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
开发了一种前所未有的光催化系统,该系统由苯并咪唑芳基氧化物甜菜碱(BI + -ArO-)和化学计量的氢化物还原剂组成,用于进行N-磺酰基-吲哚,-酰胺和-胺以及α-磺酰基酮的脱磺酰反应。进行吸收光谱和循环伏安图的测量以及密度泛函理论(DFT)计算以获取机械信息。在催化体系中,通过相应甜菜碱BI + -ArO-的氢化还原就地生成的可见光活化的苯并咪唑啉芳基氧化物(BIH-ArO-)将电子和氢原子同时提供给了底物。