Selective Sulfonylation of Arenes and Benzoylation of Alcohols Using Lithium Perchlorate as a Catalyst Under Neutral Conditions
作者:B. P. Bandgar、V. T. Kamble、V. S. Sadavarte、L. S. Uppalla
DOI:10.1055/s-2002-25345
日期:——
Sulfonylation of aromatics with p-toluenesulfonyl chloride and benzoylation of alcohols with benzoyl chloride using lithium perchlorate as a catalyst is described. The remarkable selectivity under neutral conditions is an attractive feature of this method
CuI catalyzed sulfonylation of organozinc reagents with sulfonyl halides
作者:Ying Fu、Wenbo Zhu、Xingling Zhao、Helmut Hügel、Zhouqiang Wu、Yuhu Su、Zhengyin Du、Danfeng Huang、Yulai Hu
DOI:10.1039/c4ob00638k
日期:——
In this study, a facile CuI catalyzed synthesis of sulfones involving a nucleophilic addition of functionalized organozinc reagents to organic sulfonylchlorides is realized. This reaction proceeds efficiently at room temperature, giving rise to various functional group substitutedsulfones, generally in moderate to high yields. The method provides a novel, simple, and promising strategy for functionalized
Structure and reactivity of new phosphine ligands containing the hemi-labile sulfone moiety
作者:Christopher J. Chapman、Christopher G. Frost、Mary F. Mahon
DOI:10.1039/b513390d
日期:——
New heterofunctional phosphine ligands have been synthesised, incorporating the substitutionally labile sulfone and sulfonamide moieties as chelating groups, which display activity in the palladium-catalysed Suzuki and amination cross-coupling reactions. Single-crystal X-ray diffraction studies of the complexes formed with [Pd(µ-Cl)(dmba)] (dmba-H = N,N-dimethylbenzylamine) highlight the coordinating nature of these ligands; showing the formation of a bis chelate complex through a six-membered Pd–P–C–C–S–O ring with the sulfonamide class of ligands.
Sulfonylation of aromatic compounds with sulfonic acids using silica gel-supported AlCl<sub>3</sub>as a heterogeneous Lewis acid catalyst
作者:Kaveh Parvanak Boroujeni
DOI:10.1080/17415991003777391
日期:2010.6
Silica gel-supported aluminum chloride (SiO2–AlCl3) has been shown to be a mild, efficient, and chemoselective heterogeneous Lewis acid catalyst for direct conversion of arenes to sulfones usingsulfonicacids as sulfonylating agents. The catalyst can be prepared easily with cheap starting materials and is stable (as a bench-top catalyst) and reusable.