Facile <i>N</i>-Arylation of Amines and Sulfonamides and <i>O</i>-Arylation of Phenols and Arenecarboxylic Acids
作者:Zhijian Liu、Richard C. Larock
DOI:10.1021/jo0602221
日期:2006.4.1
An efficient, transition-metal-free procedure for the N-arylation of amines, sulfonamides, and carbamates and O-arylation of phenols and carboxylicacids has been achieved by allowing these substrates to react with a variety of o-silylaryl triflates in the presence of CsF. Good to excellent yields of arylated products are obtained under very mild reaction conditions. This chemistry readily tolerates
Direct arylation of tertiary amines via aryne intermediates using diaryliodonium salts
作者:Zhiang Zhang、Xunshen Wu、Jianwei Han、Wenjun Wu、Limin Wang
DOI:10.1016/j.tetlet.2018.03.067
日期:2018.5
With a strategy by usingdiaryliodoniumsalts as the precursors of benzynes, direct N-arylation of tertiary amines with diaryliodoniumsalts was reported. Thus, the desired aromatic tertiary amines with a wide range of substituents were synthesized in moderate to excellent yields of 55–91%.
An Efficient and General Method for the Heck and Buchwald–Hartwig Coupling Reactions of Aryl Chlorides
作者:Dong-Hwan Lee、Abu Taher、Shahin Hossain、Myung-Jong Jin
DOI:10.1021/ol202177k
日期:2011.10.21
The β-diketiminatophosphane Pd complex acted as a powerful catalyst for the Heck coupling of aryl chlorides with alkenes. Various aryl and heteroaryl chlorides were coupled efficiently under relatively mild conditions. Furthermore, this catalytic system also proved to be highly active in the Buchwald–Hartwig coupling of deactivated and sterically hindered aryl chlorides at room temperature.
1,2-Difunctionalization of Aryl Triflates: A Direct and Modular Access to Diversely Functionalized Anilines
作者:Seoyoung Cho、Qiu Wang
DOI:10.1021/acs.orglett.0c00320
日期:2020.2.21
ortho-Amino difunctionalization of aryl triflates has been achieved via a three-component reaction. The cascade reaction proceeds through a zincate base-mediated deprotonative formation of a reactive aryne intermediate, in situ nucleophilic addition, and coupling with electrophilic partners. This strategy leverages the advantageous reactivity of organozincate intermediates, enabling the installation
Synthesis of N-heterocyclic carbene-Pd(II)-5-phenyloxazole complexes and initial studies of their catalytic activity toward the Buchwald-Hartwig amination of aryl chlorides
作者:Zhi-Mao Zhang、Yu-Ting Xu、Li-Xiong Shao
DOI:10.1016/j.jorganchem.2021.121683
日期:2021.5
N-heterocyclic carbene (NHC)-Pd(II) complexes using 5-phenyloxazole as the ancillary ligand have been obtained in moderate to good yields by a one-pot reaction of the corresponding imidazolium salts, palladium chloride and 5-phenyloxazole under mild conditions. Initial studies showed that one of the complexes is an efficient catalyst for the Buchwald-Hartwig amination of arylchlorides with various secondary