IBX-Promoted Oxidative Cyclization of <i>N</i>-Hydroxyalkyl Enamines: A Metal-Free Approach toward 2,3-Disubstituted Pyrroles and Pyridines
作者:Peng Gao、Huai-Juan Chen、Zi-Jing Bai、Mi-Na Zhao、Desuo Yang、Juan Wang、Ning Wang、Lele Du、Zheng-Hui Guan
DOI:10.1021/acs.joc.0c00625
日期:2020.6.19
An iodoxybenzoic acid-mediated selected oxidative cyclization of N-hydroxyalkyl enamines was developed. Through this strategy, a variety of 2,3-disubstituted pyrroles and pyridines were produced in good selectivity involving oxidation of alcohol, followed by condensation of aldehyde and α-C of enamines. Furthermore, this metal-free method has several advantages, including the use of environmentally
开发了碘氧基苯甲酸介导的N-羟烷基烯胺的选择氧化环化。通过这种策略,以良好的选择性生产了各种2,3-二取代的吡咯和吡啶,涉及醇的氧化,然后醛与烯胺的α-C缩合。此外,这种无金属方法具有多个优点,包括使用环保试剂,广泛的底物范围,温和的反应条件和高效率。