CH330674A - Process for the preparation of bis-sulfonamides - Google Patents

Process for the preparation of bis-sulfonamides

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Publication number
CH330674A
CH330674A CH330674DA CH330674A CH 330674 A CH330674 A CH 330674A CH 330674D A CH330674D A CH 330674DA CH 330674 A CH330674 A CH 330674A
Authority
CH
Switzerland
Prior art keywords
bis
sulfonamides
preparation
ammonia
general formula
Prior art date
Application number
Other languages
German (de)
Inventor
Ernst Dr Schraufstaetter
Original Assignee
Bayer 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 Bayer Ag filed Critical Bayer Ag
Publication of CH330674A publication Critical patent/CH330674A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00Amides 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
    • C07C311/15Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings

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

Description

  

  



   Verfahren zur Herstellung von   Bis-sulfonamiden   
Es wurde gefunden, dass therapeutisch wertvolle Bis-sulfonamide der allgemeinen Formel
EMI1.1     
   s      dadureh    erhalten werden können, dass man ein Bis-sulfonhalogenid der Formel
EMI1.2     
 mit Ammoniak oder Ammoniak   abspaltenden    Mitteln, wie zum Beispiel Ammoniumsalzen, umsetzt.



   In diesen Formeln bedeutet Hal ein   Halo,    genatom und X ein   Brüekenglied,    das aus einem oder mehreren C-Atomen besteht. Solche Brücken sind zum Beispiel die Carbonyl  gruppe-CO-,    die Methylengruppe-CH2-, die ¯thylengruppe -CH2-CH2- oder die Gruppen
EMI1.3     

Die Ausgangsstoffe der allgemeinen Formel II können nach den   versehiedensten    Me  thoden    gewonnen werden ;

   zum Beispiel durch direkte Sulfoehlorierung, wie dies zum   Bei-    spiel beim Diphenylmethan möglich ist, durch Umsetzung der Alkalisalze der   entsprechen-    den Bis-sulfonsäuren mit Säurehalogeniden oder über den Austausch von Aminogruppen gegen   Sulfonsäurehalogenidgruppen gemäss      DBP    Nr.   859461.    Das letztere Verfahren ist besonders zur Herstellung von Benzophenon  4,    4' - disulfonsÏurehalogeniden und ähnlichen Verbindungen aus den entsprechenden 4, 4' Diaminoverbindungen geeignet.



   Die genannten Bis-sulfonamide der Formel   I    zeigen in sehr hohen   Verdünungen    bei der Carboanhydrase eine Hemmwirkung und   über-    treffen in dieser Eigenschaft die in der Arbei von   R.      0.    Roblin und J. W. Clapp (J.



  Am.   Chem.    Soc.   72,      489 {) [1950]) besehrie-    benen heterocyclischen Sulfonamide.



   Beispiel 1
15 g   Diphenylmethan-4, 4'-disulfochlorid :    (hergestellt aus Diphenylmethan und Chlorsulfonsäure nach J. Am. Chem.   Soc.      73,    1097 [1951]) werden unter Rühren und Kühlen in eine wässerige Lösung von 25 g Ammoniumcarbonat eingetragen. Man rührt noch einige Zeit und säuert dann mit Essigsäure an. Der ausgefallene   Niedersehlag    wird abgetrennt und aus 25prozentigem Methanol umkristallisiert.



  Das so erhaltene Diphenylmethan-4, 4'-disulfonamid schmilzt bei 184¯.



   Beispiel 2
20 g Benzophenon-4, 4'-disulfochlorid   (F.   



  175  ; hergestellt durch Diazotieren von 4, 4' Diaminobenzophenon in Eisessig und konz.



  Salzsäure und Eintragen der   Diazonium-      sshloridlösungmmit.Sehwefeldi & xyd    ge  sättigten    Eisessig, der ferner   katalytisehe    Mengen von   Kupferchlorür    enthält) werden mit   100    em3 konz. Ammoniak und 100 em3 Wasser unter Rühren eine Stunde gelinde erwärmt. Hierauf wird angesäuert, abgesaugt und das Benzophenon-4,   4'-disulfon-    amid aus 50prozentigem Alkohol umkristallisiert. Die Verbindung schmilzt bei   241 .   



   Beispiel   3   
4, 8 g Benzil-4,   4'-disulfochlorid      (F.    171¯ ; wurde auf die gleiche Weise wie Benzophenon4, 4'-disulfochlorid gewonnen) werden in 70   em3    Dioxan gelost, unter Rühren 4   cma    konz. wÏsseriger Ammoniak   k zugetropft, noch    kurze Zeit erwärmt und dann das Losungsmittel im Vakuum abdestilliert. Der Rüekstand, aus 50prozentigem Alkohol umkristallisiert, stellt das   Benzil-4, 4'-disulfonamid dar, das    bei   238     unter Zersetzung schmilzt.



      Beispieg 4   
115 g a,   a-Dimethyl-diphenylmethan-4, 4'-di-    sulfochlorid (F.   166     ; auf gleiche Weise wie Benzophenon-4,   4'-disulfochlorid    hergestellt) werden mit   50    cm3 Ammoniak   gelinde    erwärmt. Hierauf wird mit Essigsäure angesäuert und der   Niedersehlag    aus 50prozentigem Alkohol umkristallisiert. Es stellt das   a, a-Dimethyl-diphenylmethan-4, 4'-disulfon    amid vom Schmelzpunkt 223¯ dar.



  



   Process for the preparation of bis-sulfonamides
It has been found that therapeutically valuable bis-sulfonamides of the general formula
EMI1.1
   s can be obtained by using a bis-sulfone halide of the formula
EMI1.2
 with ammonia or ammonia-releasing agents, such as ammonium salts.



   In these formulas, Hal means a halo, a genatom and X a bridge member that consists of one or more carbon atoms. Such bridges are, for example, the carbonyl group-CO-, the methylene group-CH2-, the ethylene group -CH2-CH2- or the groups
EMI1.3

The starting materials of the general formula II can be obtained by the most varied of methods;

   For example, by direct sulfo-chlorination, as is possible with diphenylmethane, for example, by reacting the alkali metal salts of the corresponding bis-sulfonic acids with acid halides or by exchanging amino groups for sulfonic acid halide groups in accordance with DBP No. 859461. The latter process is particularly suitable for Preparation of benzophenone 4, 4 '- disulfonsÏurehalogeniden and similar compounds from the corresponding 4, 4' diamino compounds suitable.



   The bis-sulfonamides of the formula I mentioned show, in very high dilutions, an inhibitory effect on carbonic anhydrase and in this property surpass those in the work of R. 0. Roblin and J. W. Clapp (J.



  At the. Chem. Soc. 72, 489 () [1950]) described heterocyclic sulfonamides.



   example 1
15 g of diphenylmethane-4, 4'-disulfochloride: (prepared from diphenylmethane and chlorosulfonic acid according to J. Am. Chem. Soc. 73, 1097 [1951]) are introduced into an aqueous solution of 25 g of ammonium carbonate with stirring and cooling. The mixture is stirred for a while and then acidified with acetic acid. The precipitated Niedersehlag is separated off and recrystallized from 25 percent methanol.



  The diphenylmethane-4,4'-disulfonamide thus obtained melts at 184¯.



   Example 2
20 g benzophenone-4,4'-disulfochloride (F.



  175; produced by diazotizing 4,4 'diaminobenzophenone in glacial acetic acid and conc.



  Hydrochloric acid and introduction of the diazonium chloride solution with sulfur dioxide (saturated glacial acetic acid, which also contains catalytic amounts of copper chloride) are concentrated with 100 em3. Ammonia and 100 cubic meters of water were gently heated for one hour while stirring. It is then acidified, filtered off with suction and the benzophenone-4, 4'-disulfonamide is recrystallized from 50 percent alcohol. The compound melts at 241.



   Example 3
4.8 g of benzil-4, 4'-disulfochloride (F. 171¯; was obtained in the same way as benzophenone4, 4'-disulfochloride) are dissolved in 70 em3 dioxane, 4 cc of conc. Aqueous ammonia was added dropwise, heated for a short time and then the solvent was distilled off in vacuo. The residue, recrystallized from 50 percent alcohol, is benzil-4,4'-disulfonamide, which melts at 238 with decomposition.



      Example 4
115 g of a, a-dimethyl-diphenylmethane-4,4'-disulfochloride (M.p. 166; prepared in the same way as benzophenone-4,4'-disulfochloride) are gently heated with 50 cm3 of ammonia. It is then acidified with acetic acid and recrystallized from 50 percent alcohol. It represents a, a-dimethyl-diphenylmethane-4, 4'-disulfonamide with a melting point of 223¯.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von Bis-sulfonamiden der allgemeinen Formel EMI2.1 worin X ein Brüekenglied, das aus einem oder mehreren C-Atomen besteht, bedeutet, dadurch gekennzeiehnet, dass man ein Bis-sul- fonsäurehalogenid der allgemeinen Formel EMI2.2 worin Hal ein Halogenatom bedeutet und X die oben a. ngegebene Bedeutung hat, mit Ammoniak oder Ammoniak abspaltenden Mitteln umsetzt. PATENT CLAIM Process for the preparation of bis-sulfonamides of the general formula EMI2.1 in which X is a bridge member which consists of one or more carbon atoms, characterized in that a bis-sulphonic acid halide of the general formula is used EMI2.2 wherein Hal is a halogen atom and X is the above a. Has given meaning, reacts with ammonia or ammonia-releasing agents. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass in Gegenwart eines Ver- d nnungsmittels gearbeitet wird. UNDER CLAIM Process according to patent claim, characterized in that it is carried out in the presence of a diluent.
CH330674D 1954-01-25 1954-11-25 Process for the preparation of bis-sulfonamides CH330674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE330674X 1954-01-25

Publications (1)

Publication Number Publication Date
CH330674A true CH330674A (en) 1958-06-15

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ID=6191881

Family Applications (1)

Application Number Title Priority Date Filing Date
CH330674D CH330674A (en) 1954-01-25 1954-11-25 Process for the preparation of bis-sulfonamides

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239564A (en) * 1960-12-02 1966-03-08 Reeder Earl 2 n-substituted amino halobenzo-phenones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239564A (en) * 1960-12-02 1966-03-08 Reeder Earl 2 n-substituted amino halobenzo-phenones

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