DMSO–DCE Triggered Chemodivergent C-Methylenation of Electron-Rich Arenes: An Easy Access to Diarylmethanes
作者:Pallaba Ganjan Dalai、Swayamprava Swain、Niranjan Panda
DOI:10.1021/acs.joc.3c02612
日期:2024.2.16
diarylmethanes through a dearomatization/rearomatization process. Methyl(methylene)sulfonium ions (CH2=S+–Me) were generated by simple heating of commonly used solvents such as DMSO and DCE. These ions were subsequently trapped by electron-rich arenes and heteroarenes, resulting in the synthesis of both symmetrical and unsymmetrical diarylmethanes. This protocol was further extended to access N-methylenamides
利用二甲亚砜 (DMSO) 与 1,2-二氯乙烷 (DCE) 的化学发散特性,通过脱芳构化/重芳构化过程掺入亚甲基,形成二芳基甲烷。甲基(亚甲基)锍离子(CH 2 =S + –Me)是通过简单加热常用溶剂如DMSO和DCE生成的。这些离子随后被富电子芳烃和杂芳烃捕获,从而合成对称和不对称的二芳基甲烷。该方案进一步扩展为通过在 DMSO 和 DCE 存在下使 2-萘酚与酰胺或腈反应来获得N-亚甲基酰胺。