Synthesis of <i>Methyl</i>-d<sub>3</sub> Arene via Electrochemical Deuterodefluorination of Trifluoromethyl Arene
作者:Jiaming Cheng、Jie Sheng、Xu Cheng
DOI:10.1021/acs.orglett.3c01942
日期:2023.8.4
The methyl-d3 group is a new isotopic functional group for medicine design. In this work, we report an electrochemical deuteration approach for converting aromatic trifluoromethyl to methyl-d3 groups with deuterium water in common DMF. Yields up to 94%, D ratio up to 97%, and CD3 incorporation up to 90% were achieved. A basic additive is the key factor enabling the highly chemoselective reaction.
Exploiting Hydroxamic Acids as Organocatalysts for the Epoxidation of Alkenes with Hydrogen Peroxide as the Oxidant
作者:Efthymios T. Poursaitidis、Foteini Trigka、Christiana Mantzourani、Maroula G. Kokotou、Ierasia Triandafillidi、Christoforos G. Kokotos
DOI:10.1002/ejoc.202400082
日期:2024.4.2
An organocatalytic epoxidation of alkenes synthesis is presented in which hydroxamic acids are used as the catalyst and hydrogenperoxide as the green oxidant. Mechanistic studies by direct infusion HRMS provide experimental evidence for the formation of various intermediates.