CH239158A - 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
CH239158A
CH239158A CH239158DA CH239158A CH 239158 A CH239158 A CH 239158A CH 239158D A CH239158D A CH 239158DA CH 239158 A CH239158 A CH 239158A
Authority
CH
Switzerland
Prior art keywords
pyrimidine
methyl
production
benzenesulfonamido
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 CH239158A publication Critical patent/CH239158A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (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,        daB    man ein     2-Benzolsul-          fonamido-4-methyl-py        rimidin,

      das in     p-Stel-          lung        einen    durch Hydrolyse in die     Amino-          gruppe        überführbaren        Substituenten        auf-          weist,    mit einem     hydrolysierenden        Mittel    be  handelt.  



  Das so erhaltene     2-(p-Amino-benzolsul-          fonamido)-4-methyl-pyrimidin    schmilzt bei       234 .    Die neue     Verbindung    soll als     Arznei-          mittel    sowie als     Zwischenprodukt        Verwen-          dung        finden.     



  Das     2-Benzolsulfonamido-4-methyl-pyri-          midin,    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,    insbe  sondere der     Benzolsulfonsäurehalogenide,       mit     4-Methyl-pyrimidinverbindungen,    die in       2-Stellung    eine Gruppe enthalten,     die    mit  dem     Benzolsulfonsäurederivat    ein     2-Benzol-          sulfonamido-4-methyl-pyrimidin    zu     bilden     vermag,     wie        2-Amino-4-methyl-pyrimidin.     Man kann auch entsprechende Sulfonamide  der Formel     RSO@NHY,

      in der Y einen bei  der nachfolgenden Reaktion sich abspalten  den Rest bedeutet, mit     2-Halogen-4-methyl-          pyrimidin    umsetzen. Auch können andere  dem     Fachmann    geläufige Herstellungsmetho  den benützt werden.    <I>Beispiel 1:</I>  26,4 g     p-Carbäthogyyamino-benzolsulfo-          chlorid    werden in der 4fachen Menge wasser  freiem     Pyridin    gelöst.     In        die    Lösung werden  nach und nach 10,9 g     2-Amino-4-methyl-          pyrimidin    eingetragen.

   Das     Reaktionsgemisch          wird        etwa    eine     Stunde    auf dem Wasserbad       erwärmt.    Nach Beendigung der Umsetzung       wird    das     Pyridin        im    Vakuum     abdestilliert.     Der Rückstand     wird        nunmehr    mit Wasser      versetzt, wobei das gebildete     2-(p-Carbäth-          oxyamino-benzolsulf        onamido)

  -4-methyl-pyr        i-          midin.    kristallin     ausfällt.     



  <B>33,6</B> g     2-(p-Carbäthoxyamino-benzolsul-          fonamido)-4-methyl-pyrimidin    werden mit  einer wässerigen Lösung von 12 g     Natrium-          hydroxyd        in.   <B>150</B> cm' Wasser     unter    Kochen  verseift. Die Lösung wird nötigenfalls unter  Zusatz von Tierkohle     filtriert    und mit kon  zentrierter Salzsäure     neutralisiert.    Dabei  fällt das     gebildete        2-(p-Amino-benzolsulfon-          amido)-4-methyl-pyrimidin    als     kristallines          Pulver    aus.

   Die     Verbindung    wird durch     Um-          kristallisieren    aus verdünntem Alkohol ge  reinigt und fällt dann in Form farbloser  Kristalle an. Schmelzpunkt 234 .  



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



       Beispiel   <I>2:</I>  14 g     p-Acetylamino-benzolsulfochlorid     werden in     Gegenwart    der 4fachen Menge       Pyridin,    wie in Beispiel 1,     mit    6,1 g     2-Amino-          4-methyl-pyrimidin    umgesetzt. Nach Been  digung der Reaktion wird das gebildete  2 - (p -     Acetylamino    -     benzolsulfonamido)    - 4     -          methyl-pyrimidin    isoliert.

      30,6 g der     Acetylverbindung    werden so  dann mit einer Lösung von 28 g     caicium-          hydroxyd    in 1,5 Liter Wasser     etwa    30     Stun-          den    verkocht, worauf die Lösung     in    der  Wärme mit     Essigsäure    angesäuert und das  gebildete     2-(p-Amino-benzolsulfonamido)-4-          rnethyl-pyrimidin    wie in Beispiel 1 isoliert  wird.  



  Die Hydrolyse kann man auch mit an  dern alkalischen Mitteln 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 2-benzenesulfonamido-4-methyl-pyrimidine,

      which has a substituent which can be converted into the amino group by hydrolysis in the p position, is treated with a hydrolyzing agent.



  The 2- (p-amino-benzenesulfonamido) -4-methyl-pyrimidine thus obtained melts at 234. The new compound is to be used as a medicinal product and as an intermediate product.



  The 2-benzenesulfonamido-4-methyl-pyrimidine, 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.

   The reaction of the corresponding reactive benzenesulfonic acid derivatives, in particular the benzenesulfonic acid halides, with 4-methyl-pyrimidine compounds which contain a group in the 2-position which form a 2-benzenesulfonamido-4-methyl-pyrimidine with the benzenesulfonic acid derivative is particularly suitable like 2-amino-4-methyl-pyrimidine. You can also use corresponding sulfonamides of the formula RSO @ NHY,

      in which Y means the remainder split off in the subsequent reaction, react with 2-halo-4-methylpyrimidine. Other production methods familiar to the person skilled in the art can also be used. Example 1: 26.4 g of p-carbethogyamino-benzenesulfochloride are dissolved in 4 times the amount of anhydrous pyridine. 10.9 g of 2-amino-4-methyl-pyrimidine are gradually added to the solution.

   The reaction mixture is warmed on the water bath for about an hour. After the reaction has ended, the pyridine is distilled off in vacuo. The residue is now mixed with water, the 2- (p-Carbäth- oxyamino-benzenesulfonamido) formed

  -4-methyl-pyrimidine. precipitates crystalline.



  33.6 g of 2- (p-carbethoxyamino-benzenesulfonamido) -4-methyl-pyrimidine are mixed with an aqueous solution of 12 g of sodium hydroxide in. 150 cm 'Saponified water while boiling. If necessary, the solution is filtered with the addition of animal charcoal and neutralized with concentrated hydrochloric acid. The 2- (p-amino-benzenesulfonamido) -4-methyl-pyrimidine formed precipitates out as a crystalline powder.

   The compound is purified by recrystallization from dilute alcohol and is then obtained in the form of colorless crystals. Melting point 234.



  The p-aminobenzenesulfonamide derivative formed can also be used in the form of its salts, e.g. B. of sodium or calcium isolate.



       Example <I> 2: </I> 14 g of p-acetylamino-benzenesulphochloride are reacted with 6.1 g of 2-amino-4-methyl-pyrimidine in the presence of 4 times the amount of pyridine, as in Example 1. After the end of the reaction, the 2 - (p - acetylamino - benzenesulfonamido) - 4 - methyl-pyrimidine formed is isolated.

      30.6 g of the acetyl compound are then boiled with a solution of 28 g of calcium hydroxide in 1.5 liters of water for about 30 hours, whereupon the solution is acidified with acetic acid and the 2- (p-amino- benzenesulfonamido) -4-methyl-pyrimidine as in Example 1 is isolated.



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

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Benzolsulfonamidderivates, das dadurch ge kennzeichnet ist, dass man ein 2-Benzolsul- fonamido-4-methyl-pyrimidin, das in p-Stel- lung einen durch Hydrolyse in die Amino- gruppe überführbaren Substituenten auf weist, mit einem hydrolysierenden Mittel behandelt. PATENT CLAIM: A process for the production of a new benzenesulfonamide derivative, which is characterized in that a 2-benzenesulfonamido-4-methyl-pyrimidine is used which has a substituent in the p-position which can be converted into the amino group by hydrolysis, treated with a hydrolyzing agent. Das so erhaltene 2-(p-Amino-benzolsul- fonamido)-4-methyl-pyrimidin schmilzt bei 234 . Die neue Verbindung soll als Arznei mittel sowie als Zwischenprodukt Verwen- dung finden. The 2- (p-amino-benzenesulfonamido) -4-methyl-pyrimidine thus obtained melts at 234. The new compound is to be used as a medicinal product and as an intermediate product.
CH239158D 1939-11-23 1940-11-22 Process for the production of a new benzene sulfonamide derivative. CH239158A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE239158X 1939-11-23
DE239153X 1939-11-23

Publications (1)

Publication Number Publication Date
CH239158A true CH239158A (en) 1945-09-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH239158D CH239158A (en) 1939-11-23 1940-11-22 Process for the production of a new benzene sulfonamide derivative.

Country Status (1)

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CH (1) CH239158A (en)

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