CAS: 98-37-3; 3-Amino-4-Hydroxybenzenesulfonic Acid

上下游产品

CAS号616-85-3 4-hydroxy-3-nit... | CAS号121-18-6 4-氯-3-硝基苯磺酸 | CAS号95-55-6 邻氨基苯酚 | CAS号7664-93-9 硫酸 | CAS号96-93-5 6-硝基-2-氨基苯酚-4-磺酸 | CAS号84-88-8 8-羟基-5-喹啉磺酸 | CAS号80-20-6 2-氨基苯酚-4-磺酰苯胺

4-氯-3-硝基苯磺酸置于sodium Hydrogensulfite体系中,化学反应生成 2-氨基苯酚-4-磺酸
参考文献:Fichter; Braendlin; Hallauer,Helvetica Chimica Acta,1920,Vol. 3,P. 418
标题:Fichter; Braendlin; Hallauer,Helvetica Chimica Acta,1920,Vol. 3,P. 418

专利信息

专利号:US-4005067-A
优先权日:1970-10-28
标题 :Process for the synthesis of nitrite ion-containing 1:1 complexes of cobalt and metallizable monoazo or azomethine compounds and such complexes
发明人：DORE JACKY
权利人:SANDOZ LTD
摘要:By metallization of metallizable monoazo or azomethine dyes with cobalt-donating compounds in the presence of a nitrite, especially NaNO 2 , 1:1 cobalt complexes containing a nitrite ion are obtained in a high degree of metallization which can be reacted with metallizable monoazo or azomethine dyes to give very homogeneous 2:1 cobalt complexes in a high degree of purity. This is particularly advantageous when asymmetrical 2:1 cobalt complexes are to be prepared. The process is particularly useful for the preparation of nitrite ion-containing 1:1 complexes of cobalt and a monoazo compound of the formula ##STR1## wherein X is --OH or --NHR, n wherein R is hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, phenyl or naphthyl group, n Ring A is further unsubstituted or further substituted by at least one halo, nitro or optionally substituted alkyl, alkoxy or sulfamoyl substituent, and n The naphthalene ring is further unsubstituted or further substituted by at least one hydroxy, sulfamoyl or acylamino substituent.

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.

专利号:CN-105906789-A
优先权日:2016-05-26
标题 :A high-efficiency catalyst for the synthesis of polyglycolic acid