Sulfone


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sulfone

[′səl‚fōn]
(organic chemistry)
R2SO2(or RSOOR) A compound formed by the oxidation of sulfides, for example, ethyl sulfone, C4H10SO2, from ethyl sulfide, C4H10S; the use of sulfones, particularly 4,4′-sulfonyldianiline (dapsone) in the treatment of leprosy leads to apparent improvement; relapses associated with sulfone-resistant strains have been encountered.

Sulfone

 

any of several organosulfur compounds containing the

group bonded to two organic radicals. Sulfones are colorless and very stable crystalline substances; for example, diphenylsulfone, (C6H5)2SO2, melts at 128°C and boils at 379°C. Both aliphatic and aromatic sulfones are obtained by oxidation of organic sulfides; aromatic sulfones are also obtained by means of the Friedel-Crafts reaction.

Some substituted sulfones are used in medicine—for example, diaphenylsulfone (4,4’-diaminodiphenylsulfone) is used in the treatment of leprosy. Polyarylenesulfones are used for the production of packages for foodstuffs and electrotechnical parts.

References in periodicals archive ?
Sulfone polymers have been previously studied with regard to deformation (6-18).
Solvay announced earlier this year that it plans to increase its sulfone polymers capacity by more than 35 percent in the next five years.
The chemotherapy of leprosy in Nigeria; with an appendix on glandular fever and exfoliative dermatitis precipitated by sulfones.
Indeed, the calibration procedure coupled with multivariate analysis of the spectra leads to improved accuracy for the prediction of the local sulfone and naphthalene concentrations since confidence intervals can be defined.
The combination of features such as mechanically tough and rigid, transparent, resistance against hydrolysis and against acidic attacks and melt processing at temperatures of up to 400[degrees]C, coupled with ease of fabrication, has enabled sulfone polymers to be used in a wide and increasingly diversified range of applications.
3,3'-Disulfonated-4,4'-Dichlorodiphenyl sulfone (SDCDPS) monomer [30-33] synthesized in a four-necked round bottom flask equipped with a thermometer, a condenser, a mechanical stirrer, and a nitrogen inlet-outlet.
Sulfone polymers were chosen due to their excellent clarity, stiffness and steam sterilizability, according to the manufacturer.
The structure proposed in this research shows effective catalytic activity for the environmental compatible oxidation of various sulfides to both types of sulfoxide and sulfone at room temperature.
Arvind OG says it has installed custom-built machines specifically designed to achieve Japanese quality standards and capable of handling various fibers such as M-aramid, homopolymer acrylic, poly-phenelyene sulfone (PPS), polyimide polypropylene and polyester.
Arvind OG has installed custom-built machines specifically designed to achieve Japanese quality standards and capable of handling various fibers such as M-Aramid, Homopolymer Acrylic, Poly-phenelyene Sulfone (PPS), Polyimide Polypropylene and Polyester.
Allowable liver and muscle concentrations of fenbendazole sulfone in turkeys are 6 and 2 ppm, respectively, with a 6-hour feed withdrawal.
Polyphenylene sulfide and sulfone polymers are also projected to achieve above average gains, propelled by rising motor vehicle output levels and efforts to produce more fuel efficient vehicles.