CAS: 94-85-9; 2,5-Diethoxyaniline

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CAS号119-23-3 2,5-二乙基硝基苯 | CAS号64-17-5 乙醇 | CAS号92-22-8 2',5'-二乙氧基苯甲腈 | CAS号6627-46-9 Benzenamine,4,4...

2,5-二乙基硝基苯置于sodium Tetrahydroborate,铜体系中,化学反应 0.17H,反应生成 2,5-二乙氧基苯胺
参考文献:使用硼氢化钠的氢替代作用,温和且选择性的 Cu(II) 盐催化还原硝基,偶氮,偶氮,N-芳基羟胺,亚硝基,酰卤,酯和叠氮化物
标题:使用硼氢化钠的氢替代作用,温和且选择性的 Cu(II) 盐催化还原硝基,偶氮,偶氮,N-芳基羟胺,亚硝基,酰卤,酯和叠氮化物
摘要:摘要 第一个温和,原位,单锅,高收率,筛选非常好的铜 (II) 盐基催化剂体系,利用硼氢化钠的氢替代作用,在存在于已经描述了水或甲醇之类的绿色溶剂.此外,该催化体系还可以在短时间内活化各种官能团进行氢化物还原,催化剂负载量低,无需高压或分子氢供应.值得注意的是,该系统探索了替代昂贵的传统加氢方法的巨大潜力,从而在有机合成领域提供了一种更绿色,更简单的加氢策略.
DOI:10.1080/00397911.2021.1983604

专利信息

专利号:WO-9108265-A1
优先权日:1989-12-02
标 题:Azo compounds and their use as dyes, 1-sulpho-6-carboxyl-amino naphthaline, its use as a diazo component and process for the production of these compounds
发明人：SPRINGER HARTMUT; HUSSONG KURT
权利人:HOECHST AG
摘要:The description relates to azo compounds corresponding to formula (1) below, having fibre-reactive properties and making valuable dyes. They can dye hydroxy and/or carbonamide group-containing synthetic and natural materials, especially fibre materials, like wool and especially cellulose fibre materials in bright colours. Formula (1) in which: M is hydrogen or a salt-forming metal like an alkaline metal; K is a residue of general formulae (2A) or (2B) in which: E is the residue of an intermediate component common in disazo dyes which can act as a coupling and as a diazo component, e.g. the residue of a 1-(aminophenyl) or -amino-naphthyl) pyrazolon, aminonaphthol, anilin or 1-amino naphthalin compound; v is the figure zero or 1; K is the residue of a water-soluble coupling component, preferably from the naphthol, aminonaphthol, anilin, pyrazolon, hydroxypyridon and acetoacetyl arylide series, whereby this coupling component contains 1 or 2 fibre-reactive groups of the vinyl sulphonate series; D is a benzol or naphthalin residue, whereby its substituents R?1 and R?2 are common ones in azo dyes, e.g. (besides hydrogen) lower alkyl, lower alkoxy, halogen, sulpho and carboxyl; the group -SO2?-Y is a fibre-reactive group of the vinyl sulphone series; a is the figure zero, 1 or 2; and k is the number 1 or 2. A description is also given of the compound 2-amino naphthaline-1-sulphonic acid-6-carboxylic acid which may be used as a pre-product in the production of dyes, e.g. as diazo component in the synthesis of dyes of general formula (1).

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:US-4118384-A
优先权日:1976-02-21
标题 :Process for preparation of azo dyestuffs by coupling in presence of aromatic sulphonic acid-formaldehyde reaction product
发明人：MOLLS HANS-HEINZ; SCHIWY WILLY; HORNLE REINHOLD; NEBELING REINHARD
权利人:BAYER AG
摘要:Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.

专利号:WO-2024074814-A9
优先权日:2022-10-04
标题 :Composition comprising a functionalised dye and a diallylamine comonomer and use thereof
发明人：CANNON PAUL; DONLEY ADAM; LAWRENCE ANTHONY; WRIGHT GAVIN; TURNER CARL; ROBERTS PHILIP
权利人:SUBLINO LTD; COLOUR SYNTHESIS SOLUTIONS LTD
摘要:The present teachings relate to a composition comprising a functionalised dye and a diallylamine comonomer, and the use of such compositions in methods of colouring a substrate. The present teachings provide improved bonding of a dye to a substrate, and preferably allow colouring to be conducted entirely in the presence of an aqueous solvent.

专利号:US-4035350-A
优先权日:1975-01-30
标 题:Process for the preparation of water-soluble azo dyestuffs by reacting an aromatic amine and a coupling component with alkali metal nitrite or alkyl nitrite in the absence of acid
发明人：LANDLER JOSEF; WORFEL ERHARD
权利人:HOECHST AG
摘要:A new and very advantageous Process had been found for the preparation of azo dyestuffs by diazotation and coupling in which the synthesis is carried out without the hitherto usual addition of an acid, with the proviso that at least one of the diazo and coupling components contains at least one acid group. Besides the saving of reaction material and subsequently of alkali for neutralization of the reaction medium and isolation of the dyestuff, highly concentrated solutions of the dyestuff and salt-free or practically salt-free dyestuffs can be obtained, and waste-water is no longer charged with big amounts of salts.

专利号:US-4136033-A
优先权日:1969-11-07
标 题:6-hydroxypyridone-2 compounds having a cationic group in the 3-position
发明人：STEINEMANN WILLY
权利人:SANDOZ LTD
摘要:Compounds of the formula ##STR1## wherein K.sup.⊕ is a cationic group, preferably heterocyclic, n R is hydrogen or an organic radical, preferably alkyl, phenyl or acyl, n R 1 is hydrogen, hydrocarbyl, substituted hydrocarbyl, heterocyclyl, substituted heterocyclyl, amino or substituted amino, and n A.sup.⊖ is an anion, n Are useful as intermediates in the synthesis of azo dyes of the formula ##STR2## wherein D is an aromatic carbocyclic or heterocyclic diazo component radical, and n K.sup.⊕, r, r 1 and A.sup.⊖ are as defined above.