CH191730A - Process for the preparation of a new sulfonic acid. - Google Patents

Process for the preparation of a new sulfonic acid.

Info

Publication number
CH191730A
CH191730A CH191730DA CH191730A CH 191730 A CH191730 A CH 191730A CH 191730D A CH191730D A CH 191730DA CH 191730 A CH191730 A CH 191730A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
preparation
production
new sulfonic
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH191730A publication Critical patent/CH191730A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C07C309/46—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/30—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/37—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with no unsaturation outside the aromatic ring
    • C07C39/06—Alkylated phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung einer neuen     Snlfonsäur    e.    Es wurde gefunden, dass man eine als  Zwischenprodukt verwendbare     Sulfonsäure     erhält, wenn man das saure Sulfat des       1-Arninobenzol-3-methylsulfons    auf höhere  Temperaturen erhitzt. Es ist dabei zweck  mässig, unter vermindertem Druck zu arbeiten.  



  Das so erhältliche Produkt bildet ein  graues Pulver, das sich in Wasser, besonders  in Form seiner     Alkalisalze,    leicht löst. Es  dient als Zwischenprodukt zur Herstellung  von Farbstoffen.  



  <I>Beispiel:</I>  Eine Mischung von 171 Teilen     1-Amino-          benzol-3-methylsulforr    in 100 Teilen konzen  trierter Schwefelsäure und wenig Wasser  wird     1O    Stunden unter Vakuum auf 180-200   erhitzt. Der erhaltene spröde     Rückstand    wird  in etwa 500 Teilen     Wasser    gelöst und die  Lösung von Spuren     Verunreinigungen        abfil-          triert.    Aus dein Filtrat erhält man durch    Ansäuern oder     Aussalzen    in guter Ausbeute  die     Sulfonsäure    des     1-Aminobenzol-3-methyl-          sulfons.  



  Process for the production of a new Snlfonsäur e. It has been found that a sulfonic acid which can be used as an intermediate is obtained if the acidic sulfate of 1-aminobenzene-3-methylsulfone is heated to higher temperatures. It is advantageous to work under reduced pressure.



  The product obtainable in this way forms a gray powder that dissolves easily in water, especially in the form of its alkali salts. It is used as an intermediate in the production of dyes.



  <I> Example: </I> A mixture of 171 parts of 1-aminobenzene-3-methylsulforr in 100 parts of concentrated sulfuric acid and a little water is heated to 180-200 under vacuum for 10 hours. The brittle residue obtained is dissolved in about 500 parts of water and traces of impurities are filtered off from the solution. The sulfonic acid of 1-aminobenzene-3-methyl-sulfone is obtained in good yield from the filtrate by acidification or salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer neuen Sulfonsäure, dadurch gekennzeichnet, dass man das saure Sulfat des 1-Aminobenzol-3-methyl- sulfons auf höhere Temperaturen erhitzt. Das so erhältliche Produkt bildet ein graues Pulver, das sich in Wasser, besonders in Form seiner Alkalisalze, leicht löst. Es dient als Zwischenprodukt zur Herstellung von Farbstoffen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass unter vermindertem Druck gearbeitet wird. PATENT CLAIM: Process for the production of a new sulfonic acid, characterized in that the acid sulfate of 1-aminobenzene-3-methyl sulfone is heated to higher temperatures. The product obtainable in this way forms a gray powder that dissolves easily in water, especially in the form of its alkali salts. It is used as an intermediate in the production of dyes. SUBCLAIM: Method according to claim, characterized in that it is carried out under reduced pressure.
CH191730D 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid. CH191730A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH191730T 1935-07-08
CH188318T 1935-07-08

Publications (1)

Publication Number Publication Date
CH191730A true CH191730A (en) 1937-06-30

Family

ID=25721623

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191730D CH191730A (en) 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid.

Country Status (1)

Country Link
CH (1) CH191730A (en)

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