2548-26-7Relevant academic research and scientific papers
A PROCESS FOR THE SYNTHESIS OF ARYL SULFONES
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Page/Page column 9; 12; 15, (2015/06/25)
The present patent discloses a novel, efficient and transition-metal-free room temperature single step process for synthesis of aryl sulfones and substituted aryl sulfones starting from aryl substrates.
One-pot synthesis of aryl sulfones from organometallic reagents and iodonium salts
Margraf, Natalie,Manolikakes, Georg
, p. 2582 - 2600 (2015/03/18)
A transition-metal-free arylation of lithium, magnesium, and zinc sulfinates with diaryliodonium salts is described. The sulfinic acid salts were prepared from the reaction of the corresponding organometallic reagents and sulfur dioxide. Combination of the three single steps (preparation of the organometallic compound, sulfinate formation, and arylation) leads to a one-pot sequence for the synthesis of aryl sulfones from simple starting materials. The chemoselectivity of unsymmetrical diaryliodonium salts has been investigated. Potential and limitations of this method will be discussed.
Transition-metal-free C-S bond formation: A facile access to aryl sulfones from sodium sulfinates via arynes
Pandya, Virat G.,Mhaske, Santosh B.
supporting information, p. 3836 - 3839 (2014/08/05)
Sulfones have been attractive targets for synthetic organic chemists owing to their immense applications in medicinal, material, and synthetic chemistry. In this context, an efficient transition-metal-free process has been demonstrated, wherein a broad range of alkyl/aryl/heteroaryl sodium sulfinates react with varyingly substituted aryne precursors (o-silyl aryl triflates) under mild reaction conditions to afford structurally diverse sulfones in good to excellent yields.
Arylation of lithium sulfinates with diaryliodonium salts: A direct and versatile access to arylsulfones
Umierski, Natalie,Manolikakes, Georg
, p. 4972 - 4975 (2013/10/22)
An efficient, transition-metal-free arylation of lithium sulfinates, which are readily accessible from reactions of organolithium reagents with sulfur dioxide, is described. Based on this method, a practical protocol for the direct transformation of (hetero)arenes and (hetero)aromatic halides into diarylsulfones was developed.
Metal-free synthesis of diaryl sulfones from arylsulfinic acid salts and diaryliodonium salts
Umierski, Natalie,Manolikakes, Georg
supporting information, p. 188 - 191 (2013/03/28)
An efficient, high-yielding, and transition-metal-free synthesis of diaryl sulfones from arylsulfinic acid salts and diaryliodonium salts has been developed. The mild reaction conditions tolerate a range of functional groups, and unsymmetrical diaryliodonium salts show high chemoselectivity.
Sulfonylation of aromatic compounds with sulfonic acids using silica gel-supported AlCl3 as a heterogeneous Lewis acid catalyst
Parvanak Boroujeni, Kaveh
experimental part, p. 197 - 203 (2010/11/05)
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 using sulfonic acids as sulfonylating agents. The catalyst can be prepared easily with cheap starting materials and is stable (as a bench-top catalyst) and reusable.
Polystyrene supported Al(OTf)3: A stable, efficient, selective, and reusable catalyst for sulfonylation of arenes with sulfonic acids
Boroujeni, Kaveh Parvanak
experimental part, p. 1887 - 1890 (2010/11/18)
Cross-linked polystyrene supported aluminium triflate (Ps-Al(OTf) 3) was found to be an efficient and chemoselective heterogeneous Lewis acid catalyst for the direct conversion of arenes to sulfones using sulfonic acids as sulfonylating agents. The solid acid catalyst is stable (as a bench top catalyst) and can be easily recovered and reused without appreciable change in its efficiency.
Sulfonated polybenzothiazoles: A novel Candidate for proton exchange membranes
Tan, Ning,Xiao, Guyu,Yan, Deyue
experimental part, p. 1022 - 1031 (2011/10/08)
Sulfonated polybenzothiazoles (sPBT) with high molecular weight as well as excellent solubility were synthesized for the first time, which was achieved by attaching the phenylsulfonyl pendant groups or incorporating the hexafiuoroisopropylidene moieties t
Sulfonylation of arenes with sulfonamides
Yao, Bangben,Zhang, Yuhong
, p. 5385 - 5388 (2008/12/21)
In the presence of triflic anhydride, sulfonylation of arenes with sulfonamides proceeded smoothly in Cl2CHCHCl2 at 80-140 °C, which gave rise to the desired products in good to excellent yields.
Highly selective catalytic Friedel-Crafts sulfonylation of aromatic compounds using a FeCl3-based ionic liquid
Bahrami, Kiumars,Khodei, Mohammad Mehdi,Shahbazi, Fomeida
, p. 3931 - 3934 (2008/09/21)
Friedel-Crafts sulfonylation of aromatic compounds was carried out using FeCl3-based ionic liquid. These liquids serve as efficient media as well as Lewis acid catalyst.
