CH239155A - 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
CH239155A
CH239155A CH239155DA CH239155A CH 239155 A CH239155 A CH 239155A CH 239155D A CH239155D A CH 239155DA CH 239155 A CH239155 A CH 239155A
Authority
CH
Switzerland
Prior art keywords
methyl
pyrimidine
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 CH239155A publication Critical patent/CH239155A/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)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Benzol-sulfonamidderivätes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     neuen          Benzolsulfonamidderivates,    das dadurch ge  kennzeichnet ist, dass man ein     2-Benzolsul-          fonamido-5-methylpyrimidin,    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)-5-methyl-pyrimidin    schmilzt bei  258 . Die neue Verbindung soll als Arznei  mittel sowie als     Zwischenprodukt    Verwen  dung finden.  



  Das     2-Benzolsulfonamido-5-methyl-pyri-          midin,    das in     p-Stellung    zur Sulfonamid  gruppe einen durch Hydrolyse in die     Amino-          gruppe        überführbaren        Stubstituenten    enthält,  kann auf verschiedene     Art    und Weise ge  wonnen werden.

   Besonders geeignet ist die  Umsetzung der entsprechenden reaktions  fähigen     Denzolsulfonsäurederivate,    insbeson  dere der     Benzolsnlfonsäurehalogenide,    mit    5 -     Methyl-pyrimidinverbindungen,        die        in          2-Stellung    eine Gruppe enthalten, die     mit     dem     Benzclsulfonsäurederivat    ein     2-Benzol-          sulfonamido-5-methyl-pyrimidin    zu bilden       vermag,

          wie        2-Amino-5-methyl-pyrimidin.     Man     kann    auch entsprechende     Sulfonamide     der Formel     RSOzNHY,    in der Y     einen    bei  der nachfolgenden     Reaktion    sich abspaltenden  Rest bedeutet, mit     2-Halogen-5-methyl-pyri-          midinen    umsetzen. Auch können andere, dem  Fachmann geläufige Herstellungsmethoden  benützt werden.  



  <I>Beispiel 1:</I>  26,4 g     p-Carbäthogyamino-benzolsulfo-          chlorid    werden mit 10,9 g     2-Amino-5-methyl-          pyrimidin    (F. 190 ; hergestellt durch Ein  wirkung von     Monomethylmalonester    auf       Guanidin        und    Behandlung der entstandenen       5-Methyl-2-imino-barbitursäure    mit     Phos-          phorogyychlorid    und nachfolgende Behand  lung der entstandenen     4,6-Dichlorverbindung     vom F.

   246  durch Kochen mit     Zinkstaub)     und 30 cm'     Pyridin    eine     Stunde    auf dem      Wasserbad erwärmt. Die Masse wird mit  Wasser verdünnt, der Niederschlag abge  saugt und aus     Diogan        umkristallisiert.    Die       Carbäthogyverbindung    schmilzt bei 267 .

    Zur     Verseifung    der     Carbäthogygruppe    wird  mit     2n-Natronlauge    (4     Mol)    eine Stunde auf  80-90  erwärmt, die filtrierte     Lösung    mit  Essigsäure     angesäuert    und der Niederschlag       aus        Pyridin        umkristallisiert.    Das 2-(p       Amino-benzolsulfonamido)-5-methyl-pyrimi-          din    schmilzt bei 258 . Die Ausbeute beträgt  21 g =     80/'o    der Theorie.  



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



       Beispiel   <I>2:</I>  109 g     2-Amino-5-methyl-pyrimidin    wer  den in 250     cmg    trockenem     Pyridin    mit  240 g     p-Acetylamino-benzolsulfochlorid    unter  Rühren versetzt, wobei die Temperatur nicht  über 55  steigen soll. Man erwärmt noch 2  Stunden auf 55  und versetzt mit Wasser.  Das ausgeschiedene     2-(p-Acetylamino-benzol-          sulfonamido)-5-methyl-pyrimidin    wird zur  Reinigung in     2n-Sodalösung    von 60  gelöst,  filtriert und     mit    Salzsäure gefällt.  



  80,6 g 2 - (p -     Acetylamino    -     benzolsulfon-          amido)    - 5 -     methyl    -     py        rimidin    werden in    100<B>cm'</B>     2,5n-Natronlauge    gelöst und 1  Stunde am     RückfluB    erwärmt.

   Durch Neu  tralisieren mit Säure erhält man das     2-(p-          Amino    -     benzolsulf        onamido)-5-methyl-pyrimi-          din.    Es wird durch Lösen in Alkali und  Fällen mit Säure und durch     Umkristallisie-          ren    aus verdünntem Alkohol     gereinigt.     F. 258 .  



  Die Hydrolyse kann man auch mit an  dern alkalischen     Mitteln,    beispielsweise     Erd-          alka.lihydrogyden,    wie     Caleiumhydrogyd,     oder mit sauren     Mitteln,    z. B. Salzsäure, in  Gegenwart von Wasser oder organischen     Lö-          sungsmitteln,    wie     Alkohol,    durchführen.



  Process for the preparation 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-5-methylpyrimidine which has a substituent which can be converted into the amino group by hydrolysis in the p-position has to be treated with a hydrolyzing agent.



  The 2- (p-amino-benzenesulfonamido) -5-methyl-pyrimidine thus obtained melts at 258. The new compound is to be used as a medicinal product and as an intermediate product.



  The 2-benzenesulfonamido-5-methyl-pyrimidine, which in the p-position to the sulfonamide group contains a substituent which can be converted into the amino group by hydrolysis, can be obtained in various ways.

   The reaction of the corresponding reactive denenzenesulfonic acid derivatives, in particular the benzenesulfonic acid halides, with 5-methyl-pyrimidine compounds which contain a group in the 2-position which form a 2-benzenesulfonamido-5-methyl-pyrimidine with the benzenesulfonic acid derivative is particularly suitable able to

          such as 2-amino-5-methyl-pyrimidine. Corresponding sulfonamides of the formula RSOzNHY, in which Y denotes a radical which is split off in the subsequent reaction, can also be reacted with 2-halo-5-methyl-pyrimidines. Other production methods familiar to the person skilled in the art can also be used.



  <I> Example 1: </I> 26.4 g of p-carbethogyamino-benzenesulfochloride with 10.9 g of 2-amino-5-methyl-pyrimidine (F. 190; prepared by the action of monomethylmalonic ester on guanidine and Treatment of the resulting 5-methyl-2-imino-barbituric acid with phosphorogychloride and subsequent treatment of the resulting 4,6-dichloro compound from F.

   246 by boiling with zinc dust) and 30 cm of pyridine for one hour on the water bath. The mass is diluted with water, the precipitate is filtered off with suction and recrystallized from Diogan. The carbethogy compound melts at 267.

    To saponify the carbethogy group, the mixture is heated to 80-90 for one hour with 2N sodium hydroxide solution (4 mol), the filtered solution is acidified with acetic acid and the precipitate is recrystallized from pyridine. The 2- (p-amino-benzenesulfonamido) -5-methyl-pyrimidine melts at 258. The yield is 21 g = 80% of theory.



  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> 109 g of 2-amino-5-methyl-pyrimidine are added to 250 cmg of dry pyridine with 240 g of p-acetylamino-benzenesulfochloride while stirring, the temperature not exceeding 55. The mixture is heated to 55 for a further 2 hours and treated with water. The precipitated 2- (p-acetylamino-benzenesulfonamido) -5-methyl-pyrimidine is dissolved in 2N soda solution of 60 for purification, filtered and precipitated with hydrochloric acid.



  80.6 g of 2 - (p - acetylamino - benzenesulfonamido) - 5 - methyl - pyrimidine are dissolved in 100 cm 2.5 N sodium hydroxide solution and refluxed for 1 hour.

   Neutralization with acid gives 2- (p-amino-benzenesulfonamido) -5-methyl-pyrimidine. It is purified by dissolving in alkali and precipitating with acid and by recrystallization from dilute alcohol. F. 258.



  The hydrolysis can also be done with other alkaline agents, for example Erd- alka.lihydrogyden, such as Caleiumhydrogyd, or with acidic agents such. 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, daB man ein 2-Benzolsulfon- a.mido-5-methyl-pyrimidin, das in p-Stellung einen durch Hydrolyse in die Aminogruppe überführbaren Substituenten aufweist, mit einem hydrolysierenden Mittel behandelt. Das so erhaltene 2-(p-Amino-benzolsul- fonamido)-5-methyl-pyrimidin schmilzt bei 258 . PATENT CLAIM: A process for the production of a new benzenesulfonamide derivative, which is characterized in that a 2-benzenesulfone-a.mido-5-methyl-pyrimidine, which has a substituent which can be converted into the amino group by hydrolysis, with a hydrolyzing one Means treated. The 2- (p-amino-benzenesulfonamido) -5-methyl-pyrimidine thus obtained melts at 258. Die neue Verbindung soll als Arznei mittel sowie als Zwischenprodukt Verwen dung finden. The new compound is to be used as a medicinal product and as an intermediate product.
CH239155D 1939-11-23 1940-11-22 Process for the production of a new benzene sulfonamide derivative. CH239155A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE239153X 1939-11-23
DE239155X 1939-11-23

Publications (1)

Publication Number Publication Date
CH239155A true CH239155A (en) 1945-09-15

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CH (1) CH239155A (en)

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