<i>O</i>-Perhalopyridin-4-yl Hydroxylamines: Amidyl-Radical Generation Scaffolds in Photoinduced Direct Amination of Heterocycles
作者:Lan Zheng、Yu-En Qian、Yuan-Zhuo Hu、Jun-An Xiao、Zhi-Peng Ye、Kai Chen、Hao-Yue Xiang、Xiao-Qing Chen、Hua Yang
DOI:10.1021/acs.orglett.1c00064
日期:2021.3.5
O-perhalopyridin-4-yl hydroxylamines as shelf-stable and versatile amidyl-radical precursors. The novel amination reagents can be easily prepared via a single synthetic step from inexpensive commercially available starting materials using monoprotected HONH2 as amino source. The synthetic potency of the developed reagents was well demonstrated by direct amination of a series of quinoxalin-2(1H)-ones and their
本文报道了新的O-全卤代吡啶-4-基羟胺的设计和合成,所述O-全卤代吡啶-4-基羟胺是耐贮存的和通用的酰胺基-自由基前体。使用单保护的HONH 2作为氨基源,可以通过廉价的市售起始原料通过单一合成步骤容易地制备新型胺化试剂。在光催化条件下,即使没有任何添加剂和光催化剂,一系列喹喔啉-2(1 H)-ones及其类似物的直接胺化也很好地证明了所开发试剂的合成效能。