Sulfones sulfone

Sulfones. Sulfones, R — SO2—R, are named in an analogous manner to sulfoxides, using the word sulfone in place of sulfoxide. In prefixes, the less senior radical is followed by -sulfonyl-. When the > SO2 group is incorporated in a ring, the compound is named as a dioxide. 

Properties Unfilled reinforced high-impact Unfilled reinforced sulfone) sulfone)... 

A.lpha-Olefm Sulfonates. Sulfonation of alpha-olefins yields a mixture of alkene sulfonates, hydroxyalkane sulfonates, and some amount of various disulfonates. These detergents are excellent foamers with good detergency properties. They are unaffected ia hard water and thek effects are considered superior to the alkyl ether sulfates (9). 

Substitution. Substitution products retain the same nuclear configuration as naphthalene. They are formed by the substitution of one or more hydrogen atoms with other functional groups. Substituted naphthalenes of commercial importance have been obtained by sulfonation, sulfonation and alkah fusion, alkylation, nitration and reduction, and chlorination. 

Sulfonation. Sulfonation of naphthalene with sulfuric acid produces mono-, di-, tri-, and tetranaphthalenesulfonic acids (see Naphthalene derivatives), ah of the naphthalenesulfonic acids form salts with most bases. Naphthalenesulfonic acids are important starting materials in the manufacture of organic dyes (15) (see Azo dyes). They also are intermediates used in reactions, eg, caustic fusion to yield naphthols, nitration to yield nitronaphthalenesulfonic acids, etc. 

Pigment Blue 19 [58569-23-6] 42750 triarylcarbonium sulfonate sulfonation of bis (/-phenyl aminopheny1)-3-methy1-4-aminoph enylcarbonium sulfate... 

Other direct methods for the sulfonation of the higher fatty acids are by the use of sulfur trioxide vapor or by the use of chlorosulfonic acid. Indirect methods are also available for the preparation of a-sulfo fatty acids and their salts from an a-bromo fatty acid made by the Hell-Volhard-Zelinsky reaction. The bromo compound may be converted directly to the sodium salt of a sulfonic acid through the Strecker reaction or may be converted to the mercaptan and oxidized to the sulfonate. Sulfonation of the lower fatty acids has been studied by Backer and co-workers. ... 

D. Arene Sulfonate-Aryl Sulfone (Sulfone-Fries) Rearrangement71... 

LAS (20). The sulfonation of the LAB takes place almost exclusively in the para position. Sulfonation in the ortho position is complicated by the size of the alkyl chain. During the sulfonation sulfone (21) and anhydride are formed as byproducts [152] ... 

Trialkylboranes react rapidly and in high yields with a-halo ketones,a-halo esters, a-halo nitriles, and a-halo sulfonyl derivatives (sulfones, sulfonic esters, sulfonamides) in the presence of a base to give, respectively, alkylated ketones, esters, nitriles, and sulfonyl derivatives. Potassium tert-butoxide is often a suitable base, but potassium 2,6-di-tert-butylphenoxide at 0°C in THF gives better results in most cases, possibly because the large bulk of the two tert-buXy groups prevents the base from coordinating with the R3B. The trialkylboranes are prepared by treatment of 3 mol of an alkene with 1 mol of BH3 (15-16). With appropriate boranes, the R group transferred to a-halo ketones, nitriles, and esters can be vinylic, or (for a-halo ketones and esters) aryl. " °... 

Sulfonated styrene-divylbenzene copolymers. See Styrene-divinylbenzene copolymers, sulfonated Sulfonate moeities, incorporation into polymers, 23 534, 535 Sulfonate surfactants, 24 146 Sulfonating reagents composition of, 23 520t indirect, 23 522-523t Sulfonation, 9 273-275, 313, 23 513-536, 12 181... 

Fluoromethyl phenyl sulfone Sulfone, fluoromethyl phenyl (8) ... 

Sulfonation. Sulfonation is a common reaction with dialkyl sulfates, either by slow decomposition on heating with the release of S03 or by attack at the sulfur end of the O—S bond (63). Reaction products are usually the dimethyl ether, methanol, sulfonic acid, and methyl sulfonates, corresponding to both routes. Reactive aromatics are commonly those with higher reactivity to electrophilic substitution at temperatures > 100° C. Thphenylamine, diphenylmethylamine, anisole, and diphenyl ether exhibit ring sulfonation at 150—160°C, 140°C, 155—160°C, and 180—190°C, respectively, but diphenyl ketone and benzyl methyl ether do not react up to 190°C. Diphenyl amine methylates and then sulfonates. Catalysis of sulfonation of anthraquinone by dimethyl sulfate occurs with thallium(III) oxide or mercury(II) oxide at 170°C. Alkyl interchange also gives sulfation. 

Phenyl vinyl sulfone Sulfone, phenyl vinyl (8) Benzene, (ethenylsulfonyl)-(9) (5535-48-4)... 

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