Copper-mediated sulfonylation of aryl iodides and bromides with arylsulfonyl hydrazides in PEG-400
作者:Xiangmei Wu、Yan Wang
DOI:10.1039/c8nj00075a
日期:——
Sulfonylation using stable and readily available arylsulfonyl hydrazides and aryliodides or bromides mediated by cupric acetate has been achieved. Using polyethyleneglycol (PEG-400) as an eco-friendly medium, the couplingreaction could afford a series of unsymmetrical diaryl sulfones in moderate to good yields without the presence of additional ligands and base.
Visible-light-driven electron donor–acceptor complex induced sulfonylation of diazonium salts with sulfinates
作者:Xin Liang、Yufei Li、Qing Xia、Lan Cheng、Jianbo Guo、Pei Zhang、Weihua Zhang、Qingmin Wang
DOI:10.1039/d1gc03239a
日期:——
work reports an efficient sulfonylation reaction enabled by a visible-light-induced radical coupling reaction between phenyl/heterocyclic diazoniumsalts and sulfinates. Mechanistic experiments disclosed the formation of a versatile electron donor–acceptor (EDA) complex. This transformation is characterized by an easy operational procedure under mild conditions which avoids transition metals, ligands,
Sulfonylation of aromatic compounds with methyl p-toluenesulfonate as a sulfonylating precursor
作者:M. M. Khodaei、E. Nazari
DOI:10.1007/s13738-011-0062-3
日期:2012.8
We have developed Friedel–Crafts (FC) sulfonylation of aromaticcompounds with methyl p-toluenesulfonate as a sulfonylating precursor. In this procedure, methyl p-toluenesulfonate was treated and activated with pyridine to produce N-methylpyridinium p-toluenesulfonate as a sulfonylation reagent. Reactivity of this salt for the sulfonylation of mesitylene was investigated in the presence of three different
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.
Friedel−Crafts Sulfonylation in 1-Butyl-3-methylimidazolium Chloroaluminate Ionic Liquids
作者:Susheel J. Nara、Jitendra R. Harjani、Manikrao M. Salunkhe
DOI:10.1021/jo016126b
日期:2001.12.1
1-Butyl-3-methylimidazolium chloroaluminate ionic liquids have been employed as an unconventional reaction media and as Lewis acid catalyst for Friedel-Crafts sulfonylation reaction of benzene and substituted benzenes with 4-methyl benzenesulfonyl chloride. The substrates exhibited enhanced reactivity, furnishing almost quantitative yields of diaryl sulfones, under ambient conditions. Studies concerning