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CH191732A - Process for the preparation of a new sulfonic acid. - Google Patents

Process for the preparation of a new sulfonic acid.

Info

Publication number
CH191732A
CH191732A CH191732DA CH191732A CH 191732 A CH191732 A CH 191732A CH 191732D A CH191732D A CH 191732DA CH 191732 A CH191732 A CH 191732A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
preparation
new sulfonic
new
production
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 CH191732A publication Critical patent/CH191732A/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-benzylsulfons    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>  247 Teile     1-Aminobenzol-4-benzylsulfon     werden in 3200 Teilen etwa 85     o/oiger    Essig  säure gelöst und durch Zusatz von 100 Teilen  konzentrierter Schwefelsäure in das saure  Sulfat übergeführt. Dieses wird nach dem  Abtreiben der Essigsäure 8 Stunden im Vakuum  auf 180-200o erhitzt. Der Rückstand wird  hierauf in     Natriumhydrogydlösung    gelöst und  die Lösung von Spuren Verunreinigungen ab-    filtriert. Aus dem Filtrat erhält man durch  Ansäuern in guter Ausbeute die     Sulfonsäure     des     1-Aminobenzol-4-benzylsulfons.  



  Process for the preparation of a new sulfonic acid. It has been found that a sulfonic acid which can be used as an intermediate is obtained if the acidic sulfate of 1-aminobenzene-4-benzylsulfone 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> 247 parts of 1-aminobenzene-4-benzylsulfone are dissolved in 3200 parts of about 85% acetic acid and converted into the acidic sulfate by adding 100 parts of concentrated sulfuric acid. After the acetic acid has been stripped off, this is heated to 180-200 ° under vacuum for 8 hours. The residue is then dissolved in sodium hydrogen solution and traces of impurities are filtered off from the solution. The sulphonic acid of 1-aminobenzene-4-benzylsulphone is obtained from the filtrate in good yield by acidification.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer neuen Sulfonsäure, dadurch gekennzeichnet, dass man das saure Sulfat des 1-Aininobenzol-4-benzyl- 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: a Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass untervermindertem Druck gearbeitet wird. PATENT CLAIM: Process for the production of a new sulfonic acid, characterized in that the acidic sulfate of 1-ainobenzene-4-benzyl 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: a method according to claim, characterized in that the pressure is reduced.
CH191732D 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid. CH191732A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH191732T 1935-07-08
CH188318T 1935-07-08

Publications (1)

Publication Number Publication Date
CH191732A true CH191732A (en) 1937-06-30

Family

ID=25721625

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191732D CH191732A (en) 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid.

Country Status (1)

Country Link
CH (1) CH191732A (en)

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