CAS: 88-23-3; 3-Amino-5-Chloro-2-Hydroxybenzenesulfonic Acid

上下游产品

CAS号95-85-2 2-氨基-4-氯苯酚 | CAS号88-25-5 4-Chloro-2-nitr... | CAS号26488-93-7 N-(5-氯-2-羟基苯基)乙酰胺 | CAS号6528-45-6 2-methyl-5-amin... | CAS号64037-29-2 7-Benzoxazolesu...

4-氯-2-氨基苯酚置于硫酸体系中,化学反应生成 4-氯-2-氨基苯酚-6-磺酸
参考文献:I. G. Farbenindustrie,Privatmitteilung
标题:I. G. Farbenindustrie,Privatmitteilung

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.