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CH191731A - Process for the preparation of a new sulfonic acid. - Google Patents

Process for the preparation of a new sulfonic acid.

Info

Publication number
CH191731A
CH191731A CH191731DA CH191731A CH 191731 A CH191731 A CH 191731A CH 191731D A CH191731D A CH 191731DA CH 191731 A CH191731 A CH 191731A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
preparation
new sulfonic
production
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 CH191731A publication Critical patent/CH191731A/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     Sulfonsäure.       Es wurde gefunden; dass man eine als  Zwischenprodukt verwendbare     Sulfonsäure     erhält, wenn man das saure Sulfat des 1  Aminobenzol-4-methylsulfons auf höhere Tem  peraturen erhitzt. Es ist dabei zweckmässig,  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>  In eine Lösung von 171 Teilen     1-Amino-          benzol-4-methylsulfon    in 450 Teilen etwa       85,%iger        Essigsäure        lässt        man        unter        Rühren     100 Teile konzentrierte Schwefelsäure ein  laufen.     Man    destilliert hierauf die Essigsäure  ab und erhitzt den Rückstand 10 Stunden  unter Vakuum auf 180-200 0.

   Das erhaltene  Produkt wird in heissem Wasser gelöst     und     die Lösung von Spuren Verunreinigungen         abfiltriert.    Aus dem Filtrat erhält man durch  Ansäuern in guter Ausbeute die     Sulfonsäure     des     1-Aminobenzol-4-metbylsulfons.  



  Process for the preparation of a new sulfonic acid. It was found; that a sulfonic acid which can be used as an intermediate is obtained if the acidic sulfate of 1 aminobenzene-4-methylsulfone is heated to higher temperatures. It is advisable 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> 100 parts of concentrated sulfuric acid are run into a solution of 171 parts of 1-aminobenzene-4-methylsulfone in 450 parts of about 85% strength acetic acid while stirring. The acetic acid is then distilled off and the residue is heated to 180-200 ° under vacuum for 10 hours.

   The product obtained is dissolved in hot water and traces of impurities are filtered off from the solution. The sulfonic acid of 1-aminobenzene-4-methylsulfone is obtained in good yield from the filtrate by acidification.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer neuen Sulfonsäure, dadurch gekennzeichnet, dass man das saure Sulfat des 1-Aminobenzol-4- methylsulfons. auf höhere Temperaturen er hitzt. 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-4-methyl sulfone is used. it heats up 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. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that it works under reduced pressure.
CH191731D 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid. CH191731A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188318T 1935-07-08
CH191731T 1935-07-08

Publications (1)

Publication Number Publication Date
CH191731A true CH191731A (en) 1937-06-30

Family

ID=25721624

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191731D CH191731A (en) 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid.

Country Status (1)

Country Link
CH (1) CH191731A (en)

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