GB998656A - Process for the manufacture of ortho-aminophenol-ª‰-hydroxyethyl-sulphone sulphuric acid esters - Google Patents
Process for the manufacture of ortho-aminophenol-ª‰-hydroxyethyl-sulphone sulphuric acid estersInfo
- Publication number
- GB998656A GB998656A GB3608961A GB3608961A GB998656A GB 998656 A GB998656 A GB 998656A GB 3608961 A GB3608961 A GB 3608961A GB 3608961 A GB3608961 A GB 3608961A GB 998656 A GB998656 A GB 998656A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminophenol
- ortho
- sulphuric acid
- hydroxy
- reacting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
- C07D263/54—Benzoxazoles; Hydrogenated benzoxazoles
- C07D263/58—Benzoxazoles; Hydrogenated benzoxazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
- C09B62/44—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring
- C09B62/503—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring the reactive group being an esterified or non-esterified hydroxyalkyl sulfonyl or mercaptoalkyl sulfonyl group, a quaternised or non-quaternised aminoalkyl sulfonyl group, a heterylmercapto alkyl sulfonyl group, a vinyl sulfonyl or a substituted vinyl sulfonyl group, or a thiophene-dioxide group
- C09B62/507—Azo dyes
- C09B62/51—Monoazo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Ortho - aminophenol - b - hydroxyethyl-sulphone sulphuric acid esters of the formula <FORM:0998656/C2/1> are made by treating a b -hydroxyethylsul phonyl benzoxazolone of the formula <FORM:0998656/C2/2> in which R represents a hydrogen or halogen atom or an alkyl, amino or nitro group, with sulphuric acid of 85% to 95% at a raised tem perature, preferably within the range of about 110 DEG and 160 DEG C. The starting materials may be made by reducing ortho-nitrophenol-b -hydroxy-ethyl sulphones which may contain substituents, and reacting the alkaline reaction mixtures with phosgene, or by reducing benzoxazolone sul phochlorides which may contain substituents to obtain the corresponding sulphinic acids, and reacting these compounds, for example, with b -chloroethyl alcohol. The benzoxazolones may also be made by demethylating ortho-anisidine-b -hydroxy-ethyl sulphones which may be sub stituted, and reacting the dissolved ortho aminophenol -b - hydroxyethylsulphones with phosgene. Aminobenzoxazolone - b - hydroxy ethylsulphones can also be made by catalytic reduction of the corresponding nitrobenzoxazolone-b -hydroxyethylsulphones. Examples des cribe the preparation of 2-aminophenol-4-b -hydroxyethylsulphone sulphuric acid ester and the corresponding 6-nitro, 6-amino and 6 bromo derivatives, and 2-aminophenol-5-b -hydroxyethylsulphone sulphuric acid and its 4-chloro and 4-methyl derivatives. Specification 938,145 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF32277A DE1153029B (en) | 1960-10-06 | 1960-10-06 | Process for the preparation of o-aminophenol-ª ‰ -hydroxyaethylsulfon-sulfuric acid esters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB998656A true GB998656A (en) | 1965-07-21 |
Family
ID=7094569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3608961A Expired GB998656A (en) | 1960-10-06 | 1961-10-06 | Process for the manufacture of ortho-aminophenol-ª‰-hydroxyethyl-sulphone sulphuric acid esters |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH394244A (en) |
DE (1) | DE1153029B (en) |
GB (1) | GB998656A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2061358C3 (en) * | 1970-12-12 | 1982-04-08 | Hoechst Ag, 6000 Frankfurt | Water-soluble metal complex monoazo dyes, processes for their production and their use for dyeing or printing fiber materials made from native or regenerated cellulose, natural nitrogen-containing fibers and polyamide and polyurethane fibers |
US4191703A (en) * | 1976-08-03 | 1980-03-04 | Hoechst Aktiengesellschaft | Process for the manufacture of sulfuric acid semi-ester compounds |
DE19548429A1 (en) | 1995-12-22 | 1997-06-26 | Dystar Textilfarben Gmbh & Co | Water-soluble azo dyes, process for their preparation and their use |
IN2014MN00381A (en) | 2011-08-04 | 2015-06-19 | Colourtex Ind Ltd |
-
1960
- 1960-10-06 DE DEF32277A patent/DE1153029B/en active Pending
-
1961
- 1961-10-04 CH CH1151961A patent/CH394244A/en unknown
- 1961-10-06 GB GB3608961A patent/GB998656A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH394244A (en) | 1965-06-30 |
DE1153029B (en) | 1963-08-22 |
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