孟令国教授、任悦博士在Organic Chemistry Frontiers上发表论文
题目:Electrode-switchable:exploringthisnewstrategy toachieveregiodivergentazidoiodination ofalkenes
作者:Xin-Lei Sun,Chen-Xi Xia, Yue Ren,*Yu-Jin Li, Zhi-Qian CaoandLing-Guo Meng*
单位:Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education,School of Chemistry and Materials Science;Information College,Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
摘要:The deployment ofelectrochemicalstrategies to achieve chemoselective and stereoselective syntheses has established new avenues for the construction of isomers with distinctive structural frameworks. While these advances are noteworthy, the capacity of these strategies to endow regioselectivity remains insufficiently explored.Herein, we introduce an“electrode-switchable”strategythat orchestrates the electrode-mediated regioselective azidoiodination of alkenes, showcasing the controlled diversification potential of this approach.This strategywas influenced by the choice of anode electrode materials to selectively generatedifferentsoxidation states of iodine species starting from I−.Utilizing a graphite plate anode leads toα-azido iodo compounds following azidoiodination of alkenes. In contrast, employing a Pt plate anode reverses this regioselectivity, yieldingβ-azido iodo compounds. Insights gleaned from density functional theory calculations and cyclic voltammetry electrochemical tests suggest that the adsorption energy ofI−on the Pt electrode surface and its highest oxidation state are significantly higher than that on graphite. This difference elucidates why, relative to graphite, a greater proportion of I−ions undergo oxidation on Pt, resulting in more pronounced electron loss and higher oxidation states. Additional mechanistic investigations, including control experiments, corroborate this interpretation and highlight the anode material's pivotal influence on the regiodivergent selectivity observed in the azidoiodination ofalkenes

影响因子:5.4
分区情况:一区
链接:https://pubs.rsc.org/en/content/articlelanding/2024/qo/d3qo01935g
(文、图:任悦 / 审核:李洪基 / 审校:韩满意 / 终审:韩满意)

用户登录