CH164838A - Process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid. - Google Patents

Process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid.

Info

Publication number
CH164838A
CH164838A CH164838DA CH164838A CH 164838 A CH164838 A CH 164838A CH 164838D A CH164838D A CH 164838DA CH 164838 A CH164838 A CH 164838A
Authority
CH
Switzerland
Prior art keywords
methoxybenzene
amino
chloro
sulfonic acid
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH164838A publication Critical patent/CH164838A/en

Links

Description

  

      Verfahren    zur     Herstellung,    von     5-Chlor-2-amino-l-methoxybenzol-3-sulfosäure.       Es wurde gefunden,     .dass    man     5-Chlor-2-          amino-l-methoxybenzol-3-sulfosäure    dadurch  erhalten kann, dass man     5-Chlor-2-amino-l-          methoxybenzol    mit. einem sulfonierenden Mit  tel behandelt. Die Verbindung soll als Zwi  schenprodukt zur     Herstellung    von Farbstof  fen Verwendung finden.  



  <I>Beispiel:</I>  100     -r        5-Chlor-2-amino-l-methoxybenzol     werden in 800 er     Schwefelsäuremonohydrat     bei 40 bis 50   einige Zeit gerührt, bis eine  mit Wasser verdünnte Probe bei Zugabe von  Natronlauge kein     5-Chlor-2-amino-l-methoxy-          benzol    mehr ausscheidet. Dann giesst man  das     Sulfonierungsgemisch    auf Eis, wobei die  entstandene     Sulfonsäure    sich kristallinisch    ausscheidet, saugt sie ab und wäscht mit  Wasser nach. Die neue     Sulfonsäure    bildet  gut kristallisierende     Alkalisalze,    die aus  Wasser umkristallisiert     werden,    können.



      Process for the preparation, of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid. It has been found that 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid can be obtained by adding 5-chloro-2-amino-1-methoxybenzene. treated with a sulfonating agent. The compound is intended to be used as an inter mediate product for the production of dyes.



  <I> Example: </I> 100 -r 5-chloro-2-amino-l-methoxybenzene are stirred in 800 sulfuric acid monohydrate at 40 to 50 for some time until a sample diluted with water does not produce 5-chlorine when sodium hydroxide is added -2-amino-l-methoxybenzene separates more. The sulfonation mixture is then poured onto ice, the sulfonic acid formed separating out in crystalline form, filtered off with suction and washed with water. The new sulfonic acid forms well-crystallizing alkali salts, which can be recrystallized from water.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 5-Chlor- 2-amino-l-mcthoxybenzol-3-.sulfosäure, da durch gekennzeichnet, dass man 5-Chlor-2- amino-l-methoxybenzol mit einem sulfonie- renden Mittel behandelt. Die neue Säure bildet gut kristallisie rende Alkalisalze, die aus Wasser umkri stallisiert werden können. PATENT CLAIM: A process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid, characterized in that 5-chloro-2-amino-1-methoxybenzene is treated with a sulfonating agent. The new acid forms well-crystallizing alkali salts that can be recrystallized from water.
CH164838D 1931-12-14 1932-11-15 Process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid. CH164838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE164838X 1931-12-14

Publications (1)

Publication Number Publication Date
CH164838A true CH164838A (en) 1933-10-31

Family

ID=5684708

Family Applications (1)

Application Number Title Priority Date Filing Date
CH164838D CH164838A (en) 1931-12-14 1932-11-15 Process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid.

Country Status (1)

Country Link
CH (1) CH164838A (en)

Similar Documents

Publication Publication Date Title
DE706169C (en) Process for the preparation of a water-soluble salt of the sulfuric acid ester of a higher molecular weight secondary alcohol
CH164838A (en) Process for the preparation of 5-chloro-2-amino-1-methoxybenzene-3-sulfonic acid.
DE629653C (en) Process for the preparation of tetrahydronaphthylamine sulfonic acids
DE568339C (en) Process for the production of a silver-containing preparation from ethylene diamine
AT116073B (en) Process for the production of water-soluble products from wool fatty acids.
AT160562B (en) Process for the production of vanillin.
CH169243A (en) Process for the preparation of 5-chloro-2-benzoyl-acetylamino-1-methoxybenzene-3-sulfonic acid.
AT99681B (en) Process for the preparation of easily soluble salts of quinine.
DE825258C (en) Process for cleaning anion-active wetting agents
DE550780C (en) Process for preserving solutions and jellies of organic colloid substances
AT106981B (en) Process for the production of acid-free, pure, resinous condensation products from phenols and aldehydes.
CH141451A (en) Process for the preparation of an o-aminoarylrhodane compound.
CH184016A (en) Process for the production of a new anthraquinone dye.
CH171960A (en) Process for the preparation of a dye.
CH194097A (en) Process for the preparation of a new anthraquinone dye.
CH203059A (en) Process for the preparation of a dye of the anthraquinone series.
CH224361A (en) Process for the production of an acidic wool dye.
CH211776A (en) Process for the preparation of 2-methyl-4-nitro-5-chlorophenyl-1-trifluoromethylsulfone.
CH161481A (en) Process for the preparation of 2,3-dimethylindole-6-sulfonic acid.
CH180581A (en) Process for the preparation of a new sulfonic acid.
CH163005A (en) Process for the preparation of a new sulfonic acid.
CH164730A (en) Process for the preparation of a new sulfonic acid.
CH184188A (en) Process for the preparation of a dye of the anthraquinone series.
CH185572A (en) Process for the preparation of an aminochrysenic sulfonic acid.
CH194096A (en) Process for the preparation of a new anthraquinone dye.