CH239146A - Process for the production of a new benzene sulfonamide derivative. - Google Patents

Process for the production of a new benzene sulfonamide derivative.

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Publication number
CH239146A
CH239146A CH239146DA CH239146A CH 239146 A CH239146 A CH 239146A CH 239146D A CH239146D A CH 239146DA CH 239146 A CH239146 A CH 239146A
Authority
CH
Switzerland
Prior art keywords
pyrimidine
dimethyl
production
amino
benzene sulfonamide
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH239146A publication Critical patent/CH239146A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/69Benzenesulfonamido-pyrimidines

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Benzol-sulfonamidderivates.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines neuen       Benzolsulfonamidderivates,    das dadurch ge  kennzeichnet ist, dass man ein     6-Benzolsulfon-          amido-2,4-dimethyl-pyrimidin,    das in     p-Stel-          lung    einen durch Hydrolyse in die     Amino-          gruppe        überführbaren        Substituenten        aufweist,     mit einem     hydrolysierenden        Mittel    behandelt.  



  Das so erhaltene     6-(p-Amino-benzolsulfon-          amido)-2,4-dimethyl-pyrimidin    schmilzt bei  237 . Die neue Verbindung soll als Arznei  mittel sowie als     Zwischenprodukt    Verwendung       finden.     



  Das 6 -     Benzolsulfonamido    -<B>2,4</B> -     dimethyl-          pyrimidin,    das in     p-Stellung    zur Sulfonamid  gruppe einen durch     Hydrolyse        in    die     Amino-          gruppe        überführbaren        Substituenten    enthält,  kann auf verschiedene Art und Weise ge  wonnen werden.

   Besonders geeignet ist die  Umsetzung der entsprechenden reaktions  fähigen     Benzolsulfonsäurederivate,    insbeson  dere der     Benzolsulfonsäurehalogenide    mit         2,4-Dimethyl-pyrimidinverbindungen,    die in       6-Stellung    eine Gruppe enthalten, die mit  dem     Benzolsulfonsäurederivat        ein        6-Benzol-          sulfonamido-2,4-dimethyl-pyrimidin    zu bilden  vermag, wie     6-Amino-2,4-dimethyl-pyrimidin.     Man kann auch entsprechende Sulfonamide  der Formel R     S0zNHY,

      in der Y einen bei  der     nachfolgenden    Reaktion sich abspaltenden  Rest bedeutet, mit     6-Halogen-2,4-dimethyl-          pyrimidinen    umsetzen. Auch können andere,  dem Fachmann geläufige Herstellungsmetho  den benützt werden.  



  <I>Beispiel 1:</I>  35 g     6-(p-Carbäthogyyamino-benzolsulfon-          amido)    - 2,4 -     dimethyl    -     pyrimidin    dargestellt  durch Umsetzung von     p-Carbäthogyamino-          benzolsulfochlorid    mit     6-Amino-2,4-dimethyl-          pyrimidin        (gyanmethin)

          in    Gegenwart von       Pyridin    und     Umlösen        in        Natronlauge]    werden  in 130     eins        2n-Natronlauge    auf dem Wasser  bad     erwärmt.    Nach beendeter     Verseifung          wird    die Lösung neutralisiert und das 6-      (p -     Amino    -     benzolsulfonamido)    - 2,4 -     dimethy        1-          pyrimidin    ausgefällt.  



  Das gebildete     p-Aminobenzolsulfonamid-          derivat    lässt sich auch in Form seiner Salze,  zum Beispiel des Natriums oder des     Calciums,     isolieren.  



  <I>Beispiel. 2:</I>  246     g    6 -     Amino    - 2,4 -     dimethyl    -     pyrimidin     werden fein pulverisiert und in 300 cm' trocke  nem     Pyridin    suspendiert. Unter Rühren trägt  man nun sehr langsam 235 g     p-Acetylamino-          benzolsulfochlorid    bei 15" ein und rührt 2-3  Stunden bei dieser Temperatur. Dann wird  langsam auf 55" erwärmt und nach 2 Stunden  mit Sole versetzt.

   Das abgeschiedene     6-(p-          Acetylamino-benzolsulfonamido)-2,4-dimethy        1-          pyrimidin    wird in warmer     Sodalösung    gelöst,  filtriert und mit Säure gefällt.  



  32 g 6 - (p -     Acety        lamino    -     benzolsulfon-          amido)    - 2,4 -     dimethyl    -     pyrimidin    werden in  120 cm'     2n-Natronlauge    1 Stunde auf dem  Wasserbad erwärmt. Die erhaltene Lösung  wird mit Essigsäure neutralisiert, wobei das       6-(p-Amino-benzolsulfonamido)    - 2,4 -     diniethy    1-         pyrimidin    kristallin ausfällt.     Man    kristallisiert  aus verdünntem Alkohol oder viel kochendem  Wasser um. F. 237 .  



  Die Hydrolyse kann man auch mit andern  alkalischen Mitteln, beispielsweise Erdalkali  hydroxyden, wie     Calciumhydroxyd,    oder mit  sauren Mitteln, z. B. Salzsäure, in Gegenwart  von Wasser oder organischen Lösungsmitteln,  wie Alkohol, durchführen.



  Process for the production of a new benzene sulfonamide derivative. The subject of the present patent is a process for the preparation of a new benzenesulfonamide derivative, which is characterized in that a 6-benzenesulfonamido-2,4-dimethyl-pyrimidine, which in the p-position is converted into the amino by hydrolysis has group convertible substituents, treated with a hydrolyzing agent.



  The 6- (p-amino-benzenesulfonamido) -2,4-dimethyl-pyrimidine thus obtained melts at 237. The new compound is to be used as a medicinal product and as an intermediate product.



  The 6-benzenesulfonamido- <B> 2,4 </B> - dimethylpyrimidine, which contains a substituent which can be converted into the amino group by hydrolysis in the p-position to the sulfonamide group, can be obtained in various ways.

   Particularly suitable is the implementation of the corresponding reactive benzenesulfonic acid derivatives, in particular the benzenesulfonic acid halides with 2,4-dimethyl-pyrimidine compounds which contain a group in the 6-position which, with the benzenesulfonic acid derivative, is a 6-benzenesulfonamido-2,4-dimethyl capable of forming pyrimidine, such as 6-amino-2,4-dimethyl-pyrimidine. Corresponding sulfonamides of the formula R S0zNHY,

      in which Y denotes a radical which is split off in the subsequent reaction, react with 6-halo-2,4-dimethylpyrimidines. Other manufacturing methods familiar to those skilled in the art can also be used.



  <I> Example 1: </I> 35 g of 6- (p-carbethogyamino-benzenesulphonamido) - 2,4 - dimethyl - pyrimidine, prepared by reacting p-carbethogyamino-benzenesulphonyl chloride with 6-amino-2,4-dimethyl - pyrimidine (gyanmethine)

          in the presence of pyridine and dissolving in sodium hydroxide solution] are heated in 130 one 2N sodium hydroxide solution on the water bath. When the hydrolysis is complete, the solution is neutralized and the 6- (p-amino-benzenesulfonamido) -2,4-dimethy-1-pyrimidine is precipitated.



  The p-aminobenzenesulfonamide derivative formed can also be isolated in the form of its salts, for example of sodium or calcium.



  <I> example. 2: 246 g of 6 - amino - 2,4 - dimethyl - pyrimidine are finely pulverized and suspended in 300 cm 'of dry pyridine. 235 g of p-acetylaminobenzenesulphochloride are then introduced very slowly at 15 "with stirring and the mixture is stirred for 2-3 hours at this temperature. The mixture is then slowly warmed to 55" and after 2 hours brine is added.

   The separated 6- (p-acetylamino-benzenesulfonamido) -2,4-dimethy-1-pyrimidine is dissolved in warm soda solution, filtered and precipitated with acid.



  32 g of 6 - (p - acetylamino - benzenesulfonamido) - 2,4 - dimethyl - pyrimidine are heated in 120 cm '2N sodium hydroxide solution for 1 hour on a water bath. The solution obtained is neutralized with acetic acid, the 6- (p-amino-benzenesulfonamido) - 2,4 - diniethy 1-pyrimidine precipitating in crystalline form. Recrystallize from dilute alcohol or plenty of boiling water. F. 237.



  The hydrolysis can also be carried out with other alkaline agents, for example alkaline earth metal hydroxides, such as calcium hydroxide, or with acidic agents, e.g. B. hydrochloric acid, in the presence of water or organic solvents such as alcohol.

 

Claims (1)

PATEN TANSPRUCII Verfahren zur Herstellung eines neuen Benzolsulforiamidderivates, dadurch gekenn zeichnet, dass inan ein 6-Beiizolsulfonamido- 2,4 - dimetliyl - pyriinidin, das in p-Stellung einen durch Hydrolyse in die Aininogruppe überführbaren Substituenten aufweist, mit einem hydrolysierenden Mittel behandelt. PATEN TANSPRUCII Process for the preparation of a new Benzolsulforiamidderivates, characterized in that inan a 6-Beiizolsulfonamido 2,4 - dimetliyl - pyriinidine, which has a substituent which can be converted into the amino group by hydrolysis, is treated with a hydrolyzing agent. Das so erhaltene 6-(p-Amino-benzolsulfori- amido)-2,4-dimetliyl-pyriniidin schmilzt bei 237". Die neue Verbindung soll als Arznei mittel sowie als Zwischenprodukt Verwen dung findet). The 6- (p-amino-benzenesulfori-amido) -2,4-dimethyl-pyriniidin thus obtained melts at 237 ". The new compound is said to be used as a medicament and as an intermediate product).
CH239146D 1939-11-23 1940-11-22 Process for the production of a new benzene sulfonamide derivative. CH239146A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE239146X 1939-11-23
DE239153X 1939-11-23

Publications (1)

Publication Number Publication Date
CH239146A true CH239146A (en) 1945-09-15

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CH239146D CH239146A (en) 1939-11-23 1940-11-22 Process for the production of a new benzene sulfonamide derivative.

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