-Proline N-oxide dihydrazides as an efficient ligand for cross-coupling reactions of aryl iodides and bromides with amines and phenols
作者:Zhiqiang Ding、Nan Nie、Tian Chen、Lingxin Meng、Gongshu Wang、Zhangpei Chen、Jianshe Hu
DOI:10.1016/j.tet.2020.131826
日期:2021.1
developed and applied to the cross-coupling reactions of various N- and O- nucleophilic reagents with aryl iodides and bromides. This strategy featured in the employment of an l-proline derived dihydrazides N-oxide compound as the superior supporting ligand. By using this protocol, a variety of products, including N-arylimidazoles, N-arylpyrazoles, N-arylpyrroles, N-arylamines, and aryl ethers, were synthesized
开发了一种基于1-脯氨酸N-氧化物/ CuI的新型催化系统,并将其应用于各种N-和O-亲核试剂与芳基碘化物和溴化物的交叉偶联反应。该策略的特征在于使用1-脯氨酸衍生的二酰肼N-氧化物作为优良的支持配体。通过使用该协议,可以以高达99%的产率合成包括N-芳基咪唑,N-芳基吡唑,N-芳基吡咯,N-芳基胺和芳基醚在内的多种产品。