56966-62-2Relevant academic research and scientific papers
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.
Ligand-free solid supported palladium(0) nano/microparticles promoted C-O, C-S, and C-N cross coupling reaction
Bandna,Guha, Nitul Ranjan,Shil, Arun K.,Sharma, Dharminder,Das, Pralay
supporting information, p. 5318 - 5322 (2012/10/30)
Ligand-free solid-supported nano and microparticles of Pd(0) (SS-Pd) were used as a heterogeneous catalyst in carbon-heteroatom bond formation reactions. Nitro substituted aryl halides reacted with oxygen, sulfur, and nitrogen nucleophiles to afford the corresponding products in good yields. A one-pot sequential cross coupling and nitro-reduction was also performed using the same SS-Pd catalyst to access amine substituted carbon-heteroatomic molecules. In addition, SS-Pd could be recycled up to seven runs without a significant loss of catalytic activity.
Arylmethanesulfonates are convenient latent phenols in the nucleophilic aromatic substitution reaction
Dinsmore, Christopher J.,Zartman, C. Blair
, p. 3989 - 3990 (2007/10/03)
The methanesulfonyl protecting group for a phenol is conveniently unmasked under the conditions of the S(N)Ar reaction with an activated aryl halide, producing diarylether products directly. The method is advantageous when the preparation of a phenol substrate requires O-protection, since the selection of the robust methanesulfonate as a latent phenol obviates a deprotection step prior to the S(N)Ar reaction.
