CAS: 445-03-4; 4-Chloro-2-(Trifluoromethyl)Aniline

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5-氯-2-硝基三氟甲苯置于盐酸,Tin体系中,化学反应生成 2-氨基-5-氯三氟甲苯
参考文献:635.有机氟化合物.第一部分:三氟化苯的羟基衍生物
标题:635.有机氟化合物.第一部分:三氟化苯的羟基衍生物
摘要:
DOI:10.1039/jr9490003016

专利信息

专利号:US-4257942-A
优先权日:1977-10-06
标题:New water-insoluble azo dyes
发明人：DEFEO FRANCESCO; CIPOLLI ROBERTO
权利人:ACNA
摘要:The present invention relates to the synthesis of new dyes having the following general formula: wherein: D is the residue of a diazotizable component of the carbocyclic or heterocyclic series X is an ethylene group, optionally substituted by halogen-methyl, alkyl C1-C4, aryl, aralkyl or CH2OCO(HN)nR (wherein R and n have the meanings hereinafter defined); R is alkyl C1-C8 optionally substituted by halogen, CN,COOH; aryl optionally substituted by one or more atoms of halogen, alkyl C1-C4, alkoxyl C1-C4; alkoxyl C1-C4; alkoxyl C1-C8; Aryloxy; aralkoxy; cycloalkoxy; aralkyl; naphthyl optionally substituted by halogen; alkenyl C2-C8, optionally substituted by halogen, CN, COOH; R1 and R2, either like or unlike each other, may be alkyl C1-C4 optionally substituted by halogen or CN groups; aralkyl; R3 is H; halogen, alkyl C1-C4; alkoxyl C1-C4, optionally substituted. n is 0 or 1.

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: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.

专利号:CN-110343057-B
优先权日:2019-07-02
标 题 :Synthesis method of amisulbrom