54495-62-4Relevant articles and documents
Ligand-free copper-catalyzed O-arylation of arenesulfonamides with phenols: An unusual approach to biaryl ether synthesis
Chen, Junmin,Wang, Junmin,Chen, Xida,Huang, Yuming,Shouzhi, Pu
, p. 836 - 843 (2019/03/23)
An unprecedented ligand-free copper-catalyzed O-arylation of arenesulfonamides with phenols has been developed. Thus, a range of unsysmmetric biaryl ethers were synthesized in excellent yields. The reaction occurs efficiently with excellent regioselectivity through the cleavage of Cary–S bond and with a good tolerance of functional groups on the phenyl ring of phenols. The reaction is appreciated for its readily accessible substrates, mild conditions, and simple operation under air.
Betti base as an efficient ligand for copper-catalyzed ullmann coupling of phenol with aryl halides
Yang, Li,Yang, Qichao,Shi, Jianxin,Wang, Yufang,Zhang, Mingjie
supporting information, p. 2468 - 2477 (2014/08/05)
GRAPHICAL ABSTRACT A simple, general, and highly efficient Betti base ligand has been developed for copper-catalyzed Ullmann coupling of phenol with aryl halides without the protection of an inert atmosphere. The reaction proceeds smoothly in the presence of K2CO3 as the base and dimethylsulfoxide as the solvent. The catalyst was reused several times with no evident loss of catalytic activity and is environmentally friendly.
Microwave-assisted construction of diaryl ethers directly from arylmethanesulfonates as convenient latent phenols with aryl halides
Xu, Hui,Chen, Yang
, p. 2411 - 2420 (2008/02/10)
The microwave-assisted synthesis of diaryl ethers directly from aryl halides and arylmethanesulfonates, which as latent phenols obviate a deprotection step prior to the SNAr reaction, in the presence of Cs2CO3 is described. The reaction time was very short (6-9-min), and good to excellent yields (53-90%) with the wide substrate scope were achieved without any catalyst. Copyright Taylor & Francis Group, LLC.
