Lewis Acid Activation of Pyridines for Nucleophilic Aromatic Substitution and Conjugate Addition
作者:Sarah Abou-Shehada、Matthew C. Teasdale、Steven D. Bull、Charles E. Wade、Jonathan M. J. Williams
DOI:10.1002/cssc.201403154
日期:2015.3
clean, mild and sustainable method for the functionalization of pyridines and their analogues is reported. A zinc‐based Lewis acid is used to activate pyridine and its analogues towards nucleophilic aromatic substitution, conjugate addition, and cyclization reactions by binding to the nitrogen on the pyridine ring and activating the pyridine ring core towards further functionalization.
Anticancer-Active <i>N</i>-Heteroaryl Amines Syntheses: Nucleophilic Amination of <i>N</i>-Heteroaryl Alkyl Ethers with Amines
作者:Xia Wang、Qiu-Xia Yang、Cheng-Yu Long、Yan Tan、Yi-Xin Qu、Min-Hui Su、Si-Jie Huang、Weihong Tan、Xue-Qiang Wang
DOI:10.1021/acs.orglett.9b01711
日期:2019.7.5
A mild amination protocol of N-heteroaryl alkyl ethers with various amines is described. This transformation is achieved by utilizing simple and readily available base as promoter via C–O bond cleavage, offering a new amination strategy to access several anticancer-active compounds. This work is highlighted by the excellent functional group compatibility, scalability, wide substrate scope, and easy