Metal-Free Solvent Promoted Oxidation of Benzylic Secondary Amines to Nitrones with H<sub>2</sub>O<sub>2</sub>
作者:Álisson Silva Granato、Giovanni Wilson Amarante、Javier Adrio
DOI:10.1021/acs.joc.1c01888
日期:2021.10.1
An environmentally benign protocol for the generation of nitrones from benzylic secondary amines via catalyst-free oxidation of secondary amines using H2O2 in MeOH or CH3CN is described. This methodology provides a selective access to a variety of C-aryl nitrones in yields of 60 to 93%. Several studies have been performed to shed light on the reaction mechanism and the role of the solvent.
描述了一种环境友好的方案,用于通过使用MeOH 或 CH 3 CN 中的 H 2 O 2进行仲胺的无催化剂氧化,从苄基仲胺生成硝酮。该方法可以选择性地获得多种 C-芳基硝酮,产率为 60% 至 93%。已经进行了几项研究来阐明反应机理和溶剂的作用。
Transformation of cyclic ketimines to oxaziridines and nitrones
作者:Natalia G. Voznesenskaia、Olga I. Shmatova、Valentine G. Nenajdenko
DOI:10.1016/j.mencom.2017.01.008
日期:2017.1
Treatment of 5-, 6- and 7-membered cyclic ketimines bearing alkyl or aryl group with m-chloroperbenzoic acid proceeds as C=N epoxidation and affords bicyclic oxaziridines in good yields, whose subsequent rearrangement gives nitrones.