CAS: 4273-92-1; N-(4-Chloro-2,5-Dimethoxyphenyl)-3-Hydroxy-2-Naphthamide

相似化合物

1237-75-8 92-72-8 92-73-9

上下游产品

3-Hydroxy-2-naphthoic acid 4-chloro-2,5-dimethoxy-anilinePhosphoric acid mono-[3-(4-chloro-2,5-dimethoxy-phenylcarbamoyl)-naphthalen-2-yl] ester .I. Pigment Red 146C.I. Pigment Red 146

2-羟基-3-萘甲酸,4-氯-2,5-二甲氧基苯胺置于三氯化磷体系中,用 氯苯 作为反应溶剂,化学反应 3.0H,以95%的收率获得产物色酚as-Lc
参考文献:一种色酚as系列产品的生产方法及系统
标题:一种色酚as系列产品的生产方法及系统
摘要:本发明公开了一种色酚as系列产品的生产方法及系统,具体步骤为:S1,缩合反应以氯苯作为反应溶剂,将其脱水后加入反应器中,然后加入色酚as系列产品的原料反应物,加热升温,滴加三氯化磷进行缩合反应;s2,蒸馏釜内加入碳酸钠和水,然后将s1中缩合后的物料通入蒸馏釜中,加热进行蒸馏,去除溶剂氯苯,其余物料进行过滤,滤饼进行闪蒸干燥得到色酚as系列产品.其中,As系列产品的原料反应物包括反应物a和反应物b,其中反应物a为2‑羟基‑3‑萘甲酸,反应物b可以为邻氨基苯乙醚,2,5‑二甲氧基‑4‑氯苯胺,邻氨基苯甲醚,对氯苯胺,邻甲苯胺,间硝基苯胺,甲萘胺或5‑氨基苯并咪唑酮,根据需要选择不同的反应物b即可得到不同的色酚as系列产品.

专利信息

专利号:US-4074053-A
优先权日:1973-07-20
标题 :Aldehydes of 2-hydroxy-naphthalene-3-carboxylic acid arylides
发明人：HUNGER KLAUS; PAPENFUHS THEODOR
权利人:HOECHST AG
摘要:Aldehydes of a 2-hydroxy-naphthalene-3-carboxylic acid arylide of the general formula ##STR1## IN WHICH X represents a hydrogen, chlorine or bromine atom, and Ar represents a naphthyl group, a benzimidazolone, chlorobenzimidazolone, quinazolone, quinoxaline, phthalimide, phthalazine group or a phenyl group which may carry 1 to 3 lower alkyl, lower alkoxy, lower alkylsulfonyl, lower carboalkoxy, halogen, trifluoromethyl, nitro, cyano, lower alkanoylamino, benzoylamino, carboxamido or sulfoamido groups, and a process for their preparation wherein the corresponding 2-hydroxy-naphthalene-3-carboxylic acid arylide is reacted in a lower aliphatic carboxylic acid with hexamethylene tetramine and a mineral acid. n These aldehydes are valuable intermediate products for the synthesis of optical brighteners, pharmaceuticals and, in particular, of azamethine pigments which are obtained by condensation of these aldehydes with suitable amines. The pigments thus obtained are distinguished by good fastness properties and are especially suitable for the printing of paper and the coloring of lacquers, varnishes and plastics.

专利号:US-3947516-A
优先权日:1973-07-20
标 题:Novel aromatic aldehydes and process for preparing them
发明人：HUNGER KLAUS; PAPENFUHS THEODOR
权利人:HOECHST AG
摘要:Aldehydes of a 2-hydroxy-naphthalene-3-carboxylic acid arylide of the general formula ##SPC1## n In which X represents a hydrogen, chlorine or bromine atom, and Ar represents a naphthyl group, a benzimidazolone, chlorobenzimidazoline, quinazolone, quinoxaline, phthalimide, phthalazine group or a phenyl group which may carry 1 to 3 lower alkyl, lower alkoxy, lower alkylsulfonyl, lower carboalkoxy, halogen, trifluoromethyl, nitro, cyano, lower alkanoylamino, benzoylamino, carboxamido or sulfonamido groups and a process for their preparation wherein the corresponding 2-hydroxynaphthalene-3-carboxylic acid arylide is reacted in a lower aliphatic carboxylic acid with hexamethylene tetramine and a mineral acid. n These aldehydes are valuable intermediate products for the synthesis of optical brighteners, pharmaceuticals and, in particular, of azamethine pigments which are obtained by condensation of these aldehydes with suitable amines. The pigments thus obtained are distinguished by good fastness properties and are especially suitable for the printing of paper and the coloring of lacquers, varnishes and plastics.

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.