CAS: 5444-02-0; 6-Hydroxy-4-Methyl-2-Oxo-1,2-Dihydropyridine-3-Carbonitrile

上下游产品

piperidine ethanol ethyl acetoacetate cyanoacetic acid amide 4-methyl-2,6-dihydroxypyridine 2,6-Dihydroxy-4-methyl-5-(p-tolylamino-methyl)-nicotinonitrile 2,6-Dihydroxy-4-methyl-5-(o-tolylamino-methyl)-nicotinonitrile 3-cyano-4-methylpyridine

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于氨体系中,化学反应生成 2,6-二羟基-3-氰基-4-甲基吡啶
参考文献:Hope,Journal Of The Chemical Society,1922,Vol. 121,P. 2219
标题:Hope,Journal Of The Chemical Society,1922,Vol. 121,P. 2219

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:RS-61008-B1
优先权日:2018-05-16
标题 :NEW PROCESS OF SYNTHESIS OF 3-CYANO-6-HYDROXY-4-METHYL-2-PYRIDONE

专利号:US-6111112-A
优先权日:1999-01-22
标题 :Synthesis of 3-amino-2-chloro-4-methylpyridine from malononitrile and acetone
发明人：GROZINGER KARL
权利人:BOEHRINGER INGELHEIM PHARMA
摘要:A method for making 3-amino-2-chloro-4-methylpyridine from malononitrile, as depicted in the following reaction scheme. ##STR1##

专利号:US-6136982-A
优先权日:1999-01-22
标 题:Synthesis of 3-amino-2-chloro-4-methylpyridine from acetone and ethyl cyanoacetate
发明人：GROZINGER KARL
权利人:BOEHRINGER INGELHEIM PHARMA
摘要:A method for making 3-amino-2-chloro-4-methylpyridine from acetone and ethyl cyanoacetate, as depicted in the following reaction scheme. ##STR1##

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:RS-20180570-A1
优先权日:2018-05-16
标 题 :NEW PROCESS OF SYNTHESIS OF 3-CYANO-6-HYDROXY-4-METHYL-2-PYRIDONE