CH507220A - Sulphamylanthranilic acids prepared from nitrobenzoic - Google Patents

Sulphamylanthranilic acids prepared from nitrobenzoic

Info

Publication number
CH507220A
CH507220A CH957668A CH957668A CH507220A CH 507220 A CH507220 A CH 507220A CH 957668 A CH957668 A CH 957668A CH 957668 A CH957668 A CH 957668A CH 507220 A CH507220 A CH 507220A
Authority
CH
Switzerland
Prior art keywords
formula
acid
sulfamyl
chloro
sulphamylanthranilic
Prior art date
Application number
CH957668A
Other languages
German (de)
Inventor
Nahm Helmut
Sturm Karl
Siedel Walter
Original Assignee
Hoechst 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
Priority claimed from CH343868A external-priority patent/CH461523A/en
Application filed by Hoechst Ag filed Critical Hoechst Ag
Priority to CH957668A priority Critical patent/CH507220A/en
Priority to AT06308/68A priority patent/AT289063B/en
Priority to SE978368A priority patent/SE333379B/xx
Priority to DK284268A priority patent/DK121865B/en
Priority to NL6811978A priority patent/NL6811978A/xx
Priority to FR1587693D priority patent/FR1587693A/fr
Priority to BE720289D priority patent/BE720289A/xx
Priority to DE19681806279 priority patent/DE1806279C2/en
Publication of CH507220A publication Critical patent/CH507220A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/06Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
    • C07D333/14Radicals substituted by singly bound hetero atoms other than halogen
    • C07D333/20Radicals substituted by singly bound hetero atoms other than halogen by nitrogen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • 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
    • C07C311/30Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/37Sulfonamides, 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
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/52Radicals substituted by nitrogen atoms not forming part of a nitro radical

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

Abstract

Prepn. of sulphamylanthranilic acids of formula (I) by the method given under 'PREPARATION'. - Hal = Cl, Br - R = benzyl, thienyl, furfuryl - (I) are diuretic and saluretic agents. - A mixt. of 3-sulphamyl-4-chloro-6-nitrobenzoic acid (10 g) and benzylamine (40 ml) is stirred at 100-110 deg. for 1 hr. and the hot mixt. poured into 2N-HCl (400 ml). The recovered product is dried, powdered, extd. several times with CH2Cl2 and then purified by charcoal treatment in aq. NaHCO3 soln. to yield 3-sulphamyl-4-chloro-6-benzylaminobenzoic acid (65%). m.p. 240 deg.

Description

  

  Verfahren zur Herstellung von Sulfamyl-anthranilsäuren         Gegenstand    des Hauptpatentes ist     ein    Verfahren  zur Herstellung von Sulfamyl-anthranilsäuren der For  mel  
EMI0001.0002     
    worin: Hal :ein Chlor- oder Bromatom und R den  Benzyl- oder Furfurylrest bedeutet, das dadurch     ge-          kennzeichnet        ist,    dass     man        Verbindungen    der     Formel     
EMI0001.0009     
    worin.

   R1 eine Hydroxygruppe, deren Wasserstoffatom  auch :durch ein Alkalimetall ersetzt sein kann, einen  Alkoxy- oder Aralkoxyrest mit bis zu 18 Kohlenstoff  atomen, ein Chlor- oder Bromatom -oder eine     substi-          tuerte    Amino- oder Hydrazinogruppe bedeutet, mit  Benzylamin oder Furfurylamin in Gegenwart eines or  ganischen     Lösungsmittels        umsetzt    und     die        erhaltene     Verbindung     gegebenenfalls    anschliessend alkalisch     ver-          seift.     



  Es     wurde    nun     gefunden,    dass man nach dem Ver  fahren des Hauptpatentes auch zu     Sulfamyl-anthranil-          säuren    der Formel I, ;bei denen R den Benzyl-,     Fur-          furyl-    oder Thenylrest bedeutet, ;

  gelangt, wenn man von       Verbindungen    der     Formel     
EMI0001.0027     
    worin R1 eine unsubstituierte Amino- oder     Hydrazino-          Gruppe    bedeutet, ausgeht und diese mit Benzylamin,  Furfurylamin oder 2-Thenylamin (=     2-[Aminomethyl]-          thiophen)    in Gegenwart eines organischen Lösungsmit  tels umsetzt und die erhaltene Verbindung gegebenen  falls anschliessend alkalisch verseift und erhaltene Salze  in die Säure     überführt.     



  Die als Ausgangsstoffe der Formel II zu verwenden  den unsubstituierten       3-Sulfamyl-4-halogen-6-nitro-          benzoesäureamide    bzw. -hydrazide  können durch     Umsetzung    der entsprechenden     Säure-          ahloride    mit Ammoniak bzw. Hydrazin unter milden  Bedingungen     hergestellt    werden. Man     :kann    dabei :so.

         vorgehen,    dass man das     Säurechlorid        mit        einem    Ver  dünnungsmittel     versetzt        und    bei     Zimmertemperatur     unter     schonenden        Bedingungen    Ammoniak !bis zur Sät  tigung einleitet bzw. Hydrazin ,zugibt.  



  Die so :erhaltenen Ausgangsstoffe der Formel II  werden dann in der im Hauptpatent beschriebenen  Weise zu Sulfamyl-anthranilsäuren der Formel I um  gesetzt.  



  Die Verfahrensbedingungen entsprechen     in        allen     Einzelheiten den     Bedingungen    für das     Verfahren    des  Hauptpatentes. Dies     gilt    für die     Verwendbarkeit    der  ,als Ausgangsstoffe eingesetzten Sulfamyl-benzoesäuren       bzw.        ihre    Derivate, für die     Reaktionstemperaturen,

      die  Reaktionsdauer und .die     Wahl    der     Lösungsmittel.    Vor  teilhaft ist bei der Verwendung von Thenylamin als  Umsetzungskomponente     das        Arbeiten        in        inerten        U-          sungsmitteln,    wie sie im Hauptpatent angegeben     sind,     da     Iman        bei    dieser     Arbeitsweise    praktisch mit     stöchio-          metrischen    Mengen es     Amins        auskommt.     



  Auch die     sonstigen,    im Hauptpatent enthaltenen       Ausführungen        über        Durchführung        des        erfindungsge-          mässen        Verfahrens        und        seine        vorteilhafte    Verwendbar  keit gelten     in        -gleichem    Masse     für        ,

  das        Verfahren    des       vorliegenden        Zusatzpatentes.         Die Verfahrensprodukte sind     wertvolle        Diuretika     und Saluretika und können daher in der Therapie Ver  wendung finden.  



  Das nachfolgende     Beispiel    dient     zur        Erläuterung        nies     erfindungsgemässen Verfahrens.  



  <I>Beispiel</I>  3-Sulfamyl-4-chlor-6-benzylamino-benzoesäure  In eine Lösung von 10 g     3-Sulfamyl-4-chlor-6-          nitrobenzoesäurechlorid    in 200 ml Dioxan wird bei  Zimmertemperatur     gasförmiges    Ammoniak     bis        zur    Sät  tigung eingeleitet.

   Anschliessend wird abgesaugt und das  Filtrat im Vakuum     zur        Trockne        eingedampft.    Der er  haltene Rückstand     wird        mit    der     abgesaugten    Ausfäl  lung vereinigt, zur Entfernung des Ammonchlorides mit  viel Wasser gewaschen, abgesaugt und über     Phosphor-          pentoxyd    getrocknet. Man erhält 9,6 g     3-Sulfamyl-4-          chlor-6-nitro-benzoesäureamid,    welches nach Umkri  stallisieren aus Dimethylformamid/Wasser bei 275   schmilzt.  



  5 g dieses Amides werden mit 25 ml Benzylamin  1 Stunde     bei        110         gerührt.        Anschliessend        wird        in    Eis  wasser gegossen und mit 10 %iger Salzsäure auf pH 2  eingestellt.     Die        erhaltene    harzige Masse     wird        mehr-          mals    mit Wasser     dekantiert    und anschliessend in     Alkohol     gelöst und     unter    Zusatz von Wasser     zur        Kristallisation     gebracht.

   Man erhält 4,5 g     3-Sulfamyl-4-chlor-6-benzyl-          amino-benzoesäureamid    vom Schmelzpunkt 225 .  



  4 g des vorher erhaltenen Amides werden in einer  40 % igen alkoholisch-wässrigen Natronlauge 2 Stunden  auf     ,dem    Dampfbad erhitzt. Dann wird     mit        Wasser     verdünnt und mit 10 % iger Salzsäure auf pH 2 einge  stellt. Hierbei kristallisiert die 3-Sulfamyl-4-chlor-6-    benzylamino-benzoesäure aus. Man erhält 3 g vom       Schmelzpunkt    242  C.  



  In analoger Waise, bei Verwendung von     Furfuryl-          amin    anstelle von Benzylamin, kann die     3-Sulfamyl-          4-chlor-6-furfurylaminobenzoesäure    sowie die ent  sprechende 6-Thenylaminobenzoesäure erhalten werden.



  Process for the preparation of sulfamyl-anthranilic acids The main patent relates to a process for the preparation of sulfamyl-anthranilic acids of the formula
EMI0001.0002
    in which: Hal: a chlorine or bromine atom and R denotes the benzyl or furfuryl radical, which is characterized in that compounds of the formula
EMI0001.0009
    wherein.

   R1 is a hydroxyl group, the hydrogen atom of which can also be replaced by an alkali metal, an alkoxy or aralkoxy group with up to 18 carbon atoms, a chlorine or bromine atom or a substituted amino or hydrazino group, with benzylamine or furfurylamine in the presence an organic solvent is reacted and the compound obtained is then optionally saponified under alkaline conditions.



  It has now been found that the method of the main patent also leads to sulfamyl-anthranilic acids of the formula I, in which R denotes the benzyl, furfuryl or thenyl radical,;

  when one of compounds of the formula
EMI0001.0027
    where R1 is an unsubstituted amino or hydrazino group, and this with benzylamine, furfurylamine or 2-thenylamine (= 2- [aminomethyl] thiophene) is reacted in the presence of an organic solvent and the resulting compound, if appropriate, then saponified and alkaline salts obtained converted into the acid.



  The unsubstituted 3-sulfamyl-4-halogen-6-nitrobenzoic acid amides or hydrazides to be used as starting materials of the formula II can be prepared by reacting the corresponding acid ahlorides with ammonia or hydrazine under mild conditions. You: can: so.

         The procedure is to add a diluent to the acid chloride and, at room temperature, under gentle conditions, to introduce ammonia! until saturation or to add hydrazine.



  The thus obtained starting materials of the formula II are then set to sulfamyl-anthranilic acids of the formula I in the manner described in the main patent.



  The process conditions correspond in every detail to the conditions for the process of the main patent. This applies to the usability of the sulfamylbenzoic acids or their derivatives used as starting materials, for the reaction temperatures,

      the reaction time and .the choice of solvents. When using thenylamine as a reaction component, it is advantageous to work in inert solvents, such as those specified in the main patent, since Iman manages in practice with stoichiometric amounts of amine.



  The other statements contained in the main patent about the implementation of the method according to the invention and its advantageous usability apply equally to

  the method of the present additional patent. The products of the process are valuable diuretics and saluretics and can therefore be used in therapy.



  The following example serves to explain the process according to the invention.



  <I> Example </I> 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid In a solution of 10 g of 3-sulfamyl-4-chloro-6-nitrobenzoic acid chloride in 200 ml of dioxane, gaseous ammonia is saturated at room temperature initiation.

   It is then filtered off with suction and the filtrate is evaporated to dryness in vacuo. The residue obtained is combined with the precipitate which has been filtered off with suction, washed with plenty of water to remove the ammonium chloride, filtered off with suction and dried over phosphorus pentoxide. 9.6 g of 3-sulfamyl-4-chloro-6-nitro-benzoic acid amide are obtained, which after recrystallization from dimethylformamide / water melts at 275.



  5 g of this amide are stirred at 110 for 1 hour with 25 ml of benzylamine. Then water is poured into ice and adjusted to pH 2 with 10% hydrochloric acid. The resinous mass obtained is decanted several times with water and then dissolved in alcohol and crystallized with the addition of water.

   4.5 g of 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid amide with a melting point of 225 are obtained.



  4 g of the previously obtained amide are heated in a 40% alcoholic-aqueous sodium hydroxide solution for 2 hours on the steam bath. It is then diluted with water and adjusted to pH 2 with 10% hydrochloric acid. The 3-sulfamyl-4-chloro-6-benzylamino-benzoic acid crystallizes out. 3 g with a melting point of 242 ° C. are obtained.



  In an analogous way, when using furfurylamine instead of benzylamine, 3-sulfamyl-4-chloro-6-furfurylaminobenzoic acid and the corresponding 6-thenylaminobenzoic acid can be obtained.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von Sulfamyl-anthranil- säuren der Formel I EMI0002.0049 worin Hal ein Chlor- oder Bromatom und R den Benzyl-, Furfuryl- ,oder Thenylrest bedeutet, dadurch gekennzeichnet, dass man eine Verbindung der For mel II EMI0002.0050 worin R1 eine unsubstituierte Amino- oder Hydrazino- gruppe bedeutet, mit Benzyl-, PATENT CLAIM Process for the production of sulfamyl-anthranilic acids of the formula I. EMI0002.0049 where Hal is a chlorine or bromine atom and R is the benzyl, furfuryl or thenyl radical, characterized in that a compound of the formula II EMI0002.0050 where R1 is an unsubstituted amino or hydrazino group, with benzyl, Furfuryl- oder 2-Thenyl- amin in Gegenwart eines organischen Lösungsmittels umsetzt und die erhaltene Verbindung alkalisch ver seift und erhaltene Salze in die Säure überführt. <I>Anmerkung des</I> Eidg. <I>Amtes für geistiges Eigentum:</I> Sollten Teile der Beschreibung mit der im Patentanspruch gegebenen Definition der Erfindung nicht in Einklang stehen, so sei daran erinnert, dass gemäss Art. 51 des Patentgesetzes der Patentanspruch für den sachlichen Geltungs bereich des Patentes massgebend ist. Furfuryl- or 2-thenylamine is reacted in the presence of an organic solvent and the compound obtained is soaped off with alkaline ver and the salts obtained are converted into the acid. <I> Note from the </I> Federal <I> Office for Intellectual Property: </I> If parts of the description are inconsistent with the definition of the invention given in the claim, it should be remembered that according to Art. 51 of the Patent Act, the patent claim is authoritative for the material scope of the patent.
CH957668A 1968-03-08 1968-06-27 Sulphamylanthranilic acids prepared from nitrobenzoic CH507220A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH957668A CH507220A (en) 1968-03-08 1968-06-27 Sulphamylanthranilic acids prepared from nitrobenzoic
AT06308/68A AT289063B (en) 1968-03-08 1968-07-01 PROCESS FOR THE MANUFACTURING OF SULPHAMYLANTHRANILE ACIDS
SE978368A SE333379B (en) 1968-03-08 1968-07-17
DK284268A DK121865B (en) 1968-03-08 1968-07-23 Process for the preparation of sulfamylanthranilic acids.
NL6811978A NL6811978A (en) 1968-03-08 1968-08-22
FR1587693D FR1587693A (en) 1968-03-08 1968-08-30
BE720289D BE720289A (en) 1968-03-08 1968-09-02
DE19681806279 DE1806279C2 (en) 1968-06-27 1968-10-31 Process for the preparation of sulfamyl-anthranilic acids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH343868A CH461523A (en) 1968-03-08 1968-03-08 Process for the preparation of sulfamyl-anthranilic acids
CH957668A CH507220A (en) 1968-03-08 1968-06-27 Sulphamylanthranilic acids prepared from nitrobenzoic

Publications (1)

Publication Number Publication Date
CH507220A true CH507220A (en) 1971-05-15

Family

ID=25693009

Family Applications (1)

Application Number Title Priority Date Filing Date
CH957668A CH507220A (en) 1968-03-08 1968-06-27 Sulphamylanthranilic acids prepared from nitrobenzoic

Country Status (1)

Country Link
CH (1) CH507220A (en)

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