A green synthesis strategy of 2-arylquinoxalines and 3-arylquinoxalin-2(1H)-ones via ball milling, which could avoid copious solvent waste, was accomplished in this work. Aryl radicals were produced from aryldiazoniumsalts by using a solvent-free or catalyst-free single electron transfer process induced by mechanical force, affording a series of 2-arylquinoxalines and 3-arylquinoxalin-2(1H)-ones with
本工作通过球磨实现了一种避免大量溶剂浪费的2-芳基喹喔啉和3-芳基喹喔啉-2(1 H )-酮的绿色合成策略。通过使用由机械力诱导的无溶剂或无催化剂的单电子转移过程从芳基重氮盐产生芳基自由基,得到一系列 2-arylquinoxaline 和 3-arylquinoxalin-2(1 H )-ones,其含量为 28%–85屈服。
Mechanically induced transition metal free C(sp)-H arylation of quinoxalin(on)es with diaryliodonium salts and piezoelectric BaTiO3
作者:Jun Jiang、Shengjie Song、JingJing Guo、Jiadi Zhou、Jianjun Li
DOI:10.1016/j.tetlet.2022.153820
日期:2022.5
A transition metalfree mechanically induced C(sp2)-H arylation of quinoxalin(on)es is described. In this study, diaryliodoniumsalts generate aryl radical by planetary ball milling, with the assist of piezoelectric material BaTiO3. A broad range of functional groups are tolerated to give products in moderate to good yields via radical mechanism.