CH191733A - Process for the preparation of a new sulfonic acid. - Google Patents

Process for the preparation of a new sulfonic acid.

Info

Publication number
CH191733A
CH191733A CH191733DA CH191733A CH 191733 A CH191733 A CH 191733A CH 191733D A CH191733D A CH 191733DA CH 191733 A CH191733 A CH 191733A
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 CH191733A publication Critical patent/CH191733A/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

Description

  

  Verfahren zur Herstellung einer neuen     Sulfonsäure.       Es     wurde    gefunden, dass man eine als  Zwischenprodukt verwendbare     Sulfonssäure     erhält, wenn man das saure Sulfat des 2  Amino-4'-methyl-1,1'-diphenylsulfons auf  höhere Temperaturen 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     2-Amino-4'methyl-1,1'-diphe-          nyIsulfon    werden in 500 Teilen etwa     85%-          iger    Essigsäure gelöst und durch Zusatz von  100 Teilen     konzentrierter    Schwefelsäure in  das saure Sulfat übergeführt. Dieses wird  nach dem Abtreiben der Essigsäure 8 Stun  den im Vakuum auf 180 bis 200' erhitzt.

    Der Rückstand wird hierauf in     Natrium-          hydroxydlösung    gelöst und die Lösung von  Spuren     Verunreinigungen    erbfiltriert.     Aus       dem Filtrat erhält man .durch     Ansäuern    in  guter Ausbeute die     Sulfonsäure    des     2-          Amino-4'-methyl-1,1'-diphenylsülfons,.  



  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 2 amino-4'-methyl-1,1'-diphenyl sulfone is heated to higher temperatures. It is advisable to work under reduced pressure.



  The product obtainable in this way forms a gray powder that easily dissolves 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 2-amino-4'methyl-1,1'-diphenyisulphone are dissolved in 500 parts of about 85% acetic acid and converted into the acidic sulphate by adding 100 parts of concentrated sulfuric acid convicted. After the acetic acid has been driven off, this is heated to 180 to 200 'in a vacuum for 8 hours.

    The residue is then dissolved in sodium hydroxide solution and traces of impurities are removed by filtration. The sulfonic acid of 2-amino-4'-methyl-1,1'-diphenyl sulfonic acid 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 2-Amino-4'-methyl- 1,1'-diphenylsulfons auf höhere Tempera turen 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. PATENT CLAIM: Process for the production of a new sulfonic acid, characterized in that the acidic 'sulfate of 2-amino-4'-methyl-1,1'-diphenyl sulfone is heated to higher temperatures. The product obtainable in this way forms a gray powder that easily dissolves in water, especially in the form of its alkali salts. It is used as an intermediate in the production of dyes. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass unter vermindertem Druck gearbeitet wird. SUBCLAIM: Method according to claim, characterized in that it is carried out under reduced pressure.
CH191733D 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid. CH191733A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188318T 1935-07-08
CH191733T 1935-07-08

Publications (1)

Publication Number Publication Date
CH191733A true CH191733A (en) 1937-06-30

Family

ID=25721626

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191733D CH191733A (en) 1935-07-08 1935-07-08 Process for the preparation of a new sulfonic acid.

Country Status (1)

Country Link
CH (1) CH191733A (en)

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