CAS: 88-44-8; 4-Aminotoluene-3-Sulfonic Acid

上下游产品

CAS号2942-15-6 6-甲基苯并噻唑 | CAS号106-49-0 对甲苯胺 | CAS号7664-93-9 硫酸 | CAS号103-89-9 4-甲基乙酰苯胺 | CAS号118-88-7 4-氨基甲苯-2-磺酸 | CAS号540-25-0 4-甲基苯胺硫酸盐 | CAS号599-86-0 N-对甲苯基-对甲苯磺胺 | CAS号623-10-9 4-(HYDROXYAMINO... | CAS号99-99-0 对硝基甲苯 | CAS号623-11-0 对硝基甲苯 | CAS号99-96-7 4-羟基苯甲酸 | CAS号106-49-0 对甲苯胺 | CAS号2835-98-5 2-氨基-5-甲基苯酚 | CAS号6968-24-7 2,6-二溴-4-甲基苯胺 | CAS号609-93-8 2,6-二硝基对甲酚 | CAS号144-62-7 草酸 | CAS号139778-27-1 2-碘-5-甲基苯磺酸 | CAS号118-88-7 4-氨基甲苯-2-磺酸 | CAS号68734-90-7 4-amino-toluene... | CAS号7664-93-9 硫酸

4-甲基乙酰苯胺置于硫酸体系中,化学反应生成 4-氨基甲苯-3-磺酸
参考文献:Scott; Cohen,Journal Of The Chemical Society,1923,Vol. 123,P. 3187
标题:Scott; Cohen,Journal Of The Chemical Society,1923,Vol. 123,P. 3187

专利信息

专利号:US-5189206-A
优先权日:1989-03-16
标题 :Process for the preparation of aminobenzenesulfonic acids
发明人：HERZIG PAUL
权利人:CIBA GEIGY CORP
摘要:There is disclosed a process for the preparation of compounds of formula ##STR1## wherein the symbols are as defined in claim 1, which process comprises dissolving a compound of formula ##STR2## in sulfuric acid, adding this solution to oleum and reacting the mixture in the temperature range from 10° to 80° C. until a sulfo group has been completely introduced, and, in an optional further step, subjecting the reaction mixture to further reaction in the temperature range from 100° to 200° C. to introduce a second sulfo group. n The compounds of formula (1) obtainable by this process are useful intermediates for the synthesis of dyes and are particularly suitable diazo components for the synthesis of azo dyes.

专利号:US-5366546-A
优先权日:1991-11-23
标 题 :Production of pigment compositions
发明人：MCCRAE JAMES M; KEIRS ANNE M; NIMMO JOHN A
权利人:CIBA GEIGY CORP
摘要:A process for the production of a pigment composition, comprising combining a) a dispersion of one or more non-polar components of a surface coating vehicle, or a non-polar additive for the pigment composition in an aqueous solution of a salt of a polar pigment additive, with b) an aqueous slurry of a pigment or a precursor thereof, before, during or after the synthesis of the pigment; and then isolating the pigment composition so obtained.

专利号:US-2017121258-A1
优先权日:2014-04-10
标题 :Synthesis of r-glucosides, sugar alcohols, reduced sugar alcohols, and furan derivatives of reduced sugar alcohols
发明人：SANBORN ALEXANDRA; BINDER THOMAS P
权利人:ARCHER DANIELS MIDLAND CO
摘要:Disclosed herein are methods for synthesizing 1,2,5,6-hexanetetrol (HTO), 1,6 hexanediol (HDO) and other reduced polyols from C5 and C6 sugar alcohols or R glycosides. The methods include contacting the sugar alcohol or R-glycoside with a copper catalyst, most desirably a Raney copper catalyst with hydrogen for a time, temperature and pressure sufficient to form reduced polyols having 2 to 3 fewer hydoxy groups than the starting material. When the starting compound is a C6 sugar alcohol such as sorbitol or R-glycoside of a C6 sugar such as methyl glucoside, the predominant product is HTO. The same catalyst can be used to further reduce the HTO to HDO.

专利号:US-10519124-B2
优先权日:2014-04-10
标题 :Synthesis of R-glucosides, sugar alcohols, reduced sugar alcohols, and furan derivatives of reduced sugar alcohols
发明人：STENSRUD KENNETH; Ma chi-cheng; MARTIN KEVIN
权利人:ARCHER DANIELS MIDLAND CO
摘要:Disclosed herein are methods for synthesizing 1,2,5,6-hexanetetrol (HTO), 1,6 hexanediol (HDO) and other reduced polyols from C5 and C6 sugar alcohols or R glycosides. The methods include contacting the sugar alcohol or R-glycoside with a copper catalyst, most desirably a Raney copper catalyst with hydrogen for a time, temperature and pressure sufficient to form reduced polyols having 2 to 3 fewer hydoxy groups than the starting material. When the starting compound is a C6 sugar alcohol such as sorbitol or R-glycoside of a C6 sugar such as methyl glucoside, the predominant product is HTO. The same catalyst can be used to further reduce the HTO to HDO.

专利号:US-5190585-A
优先权日:1988-10-06
标 题 :Production of pigment compositions
发明人：MCCRAE JAMES M; FORSYTHE NEIL C W
权利人:CIBA GEIGY CORP
摘要:The present invention provides processes for the production of a pigment composition comprising: Ia) contacting a pigment, before or during its synthesis, with a water-immiscible carrier medium, and then completing the pigment synthesis to produce a pigment composition comprising the pigment and the water-immiscible carrier medium, and Ib) contacting the resulting aqueous fully-synthesized pigment composition with an aliphatic organic acid and optionally a water-immiscible carrier medium; adjusting the pH value of the mixture so obtained to below 7.0; and then adjusting to the pH value of the mixture to a value above 7.0 thereby transferring the organic acid into the aqueous phase; and isolating a pigment composition comprising the pigment and the water-immiscible carrier medium, or II) contacting an aqueous fully-synthesized pigment slurry with an aliphatic organic acid and a water-immiscible carrier medium according to above step Ib).

专利号:US-4719053-A
优先权日:1980-08-01
标题 :Beta-chloroethylsulfonylmethyl-benzoic halides as intermediates
发明人：SCHLAEFER LUDWIG; HAEHNLE REINHARD
权利人:HOECHST AG
摘要:New beta -chloroethylsuflonylmethyl-benzoic acid halides which can serve as fibre-reactive anchors for thesynthesis of novel organic, water-soluble compounds, preferably dyestuffs, having fibre-reactive and fibre-finishing properties, such as preferably dyestuff properties, and containing, as a fibre-reactive group, one or two beta -chloroethylsufonylmethylbenzoic acid amide groups. For the synthesis of these novel fibre-finishing compounds, said new beta -chloroethylsulfonylmethyl-benzoic acid halide compounds are reacted with an organic, water-soluble compound having fibre-finishing properties and continuing one or two amino groups. Also precursors of the fibre-finishing, fibre-reactive compounds, containing said beta -chloroethylsulfonylmethyl-benzxoic acid amid grouping, can be employed for their synthesis. The novel fibre-finishing compounds can be applied onto suitable fibre materials, such as especially cellulose fibre material and natural or synthetic polyamide fibre materials, and fixed on these fibre materials in a manner similar to application and fixation methods usual in the technique for fibre-reactive compounds. The fibre-finished material, such as dyed material, shows very good wet fastnesses.