DE910654C - Process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives - Google Patents

Process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives

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Publication number
DE910654C
DE910654C DER10480A DER0010480A DE910654C DE 910654 C DE910654 C DE 910654C DE R10480 A DER10480 A DE R10480A DE R0010480 A DER0010480 A DE R0010480A DE 910654 C DE910654 C DE 910654C
Authority
DE
Germany
Prior art keywords
amino
haloarylamino
preparation
triazine derivatives
triazine
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DER10480A
Other languages
German (de)
Inventor
Dipl-Ing Dr Otto Clauder
Dr Bela Zemplen
Gyula Bulcsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Richter Gedeon Vegyeszeti Gyar Nyrt
Original Assignee
Richter Gedeon Vegyeszeti Gyar RT
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 Richter Gedeon Vegyeszeti Gyar RT filed Critical Richter Gedeon Vegyeszeti Gyar RT
Priority to DER10480A priority Critical patent/DE910654C/en
Application granted granted Critical
Publication of DE910654C publication Critical patent/DE910654C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D251/00Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40Nitrogen atoms
    • C07D251/54Three nitrogen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D251/00Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40Nitrogen atoms
    • C07D251/48Two nitrogen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D253/00Heterocyclic compounds containing six-membered rings having three nitrogen atoms as the only ring hetero atoms, not provided for by group C07D251/00
    • C07D253/02Heterocyclic compounds containing six-membered rings having three nitrogen atoms as the only ring hetero atoms, not provided for by group C07D251/00 not condensed with other rings
    • C07D253/061,2,4-Triazines
    • C07D253/0651,2,4-Triazines having three double bonds between ring members or between ring members and non-ring members
    • C07D253/071,2,4-Triazines having three 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, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D253/075Two hetero atoms, in positions 3 and 5

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

Description

Verfahren zur Herstellung von 2-Halogenarylamino-4-amino-1, 3, 5-triazinderivaten Im Patent 896 492 wird ein Verfahren zur Herstellung von diuretisch wirksamen 2-Halogenarylamino-4-amino-i, 3, 5-triazinderivaten geschützt, darin bestehend, daß man i-Halogenarylbiguanide durch Erhitzen mit einem Überschuß von Ameisensäure oder deren Salzen oder reaktionsfähigen Derivaten einer ringschließenden Kondensation unterwirft und die erhaltenen Triazine gegebenenfalls im aromatischen Kern weiterhalogeniert.Process for the preparation of 2-haloarylamino-4-amino-1, 3, 5-triazine derivatives In patent 896 492 a process for the preparation of diuretically active 2-haloarylamino-4-amino-i, 3, 5-triazine derivatives protected, consisting in that i-haloarylbiguanide by heating with an excess of formic acid or its salts or reactive Subjects derivatives to a ring-closing condensation and the triazines obtained optionally further halogenated in the aromatic nucleus.

Es wurde gefunden, daß die Monohalogenverbindungen auch hergestellt werden können, wenn man von nicht halogenierten i-Arylbiguaniden ausgeht, diese der ringschließenden Kondensation gemäß Hauptpatent unterwirft und den im Arylkern erwünschten Monohalogensubstituenten in an sich bekannter Weise nach erfolgtem Ringschluß einführt.It was found that the monohalogen compounds were also produced can be, if one starts from non-halogenated i-aryl biguanides, these subject to the ring-closing condensation according to the main patent and that in the aryl core desired monohalogen substituents in a manner known per se after the ring closure has taken place introduces.

Als Ausgangsstoff ist z. B. das i-Phenylbiguanid, und zwar sowohl die Base an sich wie auch zweckmäßig ihre Salze, vorzugsweise das Hydrochlorid, geeignet. Der Ringschluß wird in bekannter Weise mit einem Überschuß von Ameisensäure, ameisensauren Salzen bzw. reaktionsfähigen Ameisensäurederivaten, wie Ester, Amide, Amidine oder Chloroform, durchgeführt. Wie im Hauptpatent beschrieben, kann der Ringschluß auch mit technischer 85%iger Ameisensäure vorgenommen werden. Die erhaltenen Arylbiguanide werden im sauren Medium, z. B. in konzentrierter Essigsäure, mit einem elementaren Halogen, wie Chlor oder Brom, oder einer Halogen abgebenden Verbindung, wie organische Perbromide usw., behandelt, wobei das entsprechende monohalogenierte Arylaminotriazin entsteht. Die Reaktion kann bei Zimmertemperatur vorgenommen werden, wird jedoch vorzugsweise unter gelindem Erwärmen durchgeführt. An Stelle der reinen Triazinbase kann man vorteilhaft vom Hydrochlorid ausgehen. Beispiel i 21,39 (o,i Mol) i-Phenylbiguanidchlorhydrat werden in heißem Wasser gelöst und die Lösung unter Rühren mit 5,39 (o,o5 Mol) Natriumcarbonat versetzt. Nach Abkühlung scheiden sich nadelförmige Kristalle in einer Menge von 15 g aus. Dieses Produkt wird mit 8o ml 85°/oiger technischer Ameisensäure während 4 Stunden zum Sieden erhitzt und danach aus dem Reaktionsgemisch 4o bis 50 ml Ameisensäure abdestilliert. Der Rest wird mit Wasser verdünnt, in Eis gekühlt und mit konzentrierter Lauge versetzt. Der sich dabei ausscheidende Niederschlag besteht aus 2-Anilino-4-amino-i, 3, 5-triazin und wird aus 40- bis 5o°/oigem Alkohol umkristallisiert. Das reine Produkt schmilzt bei 232 bis 233'.The starting material is z. B. i-phenylbiguanide, both the base per se and also suitably its salts, preferably the hydrochloride, are suitable. The ring closure is carried out in a known manner with an excess of formic acid, formic acid salts or reactive formic acid derivatives, such as esters, amides, amidines or chloroform. As described in the main patent, the ring closure can also be carried out with technical 85% formic acid. The aryl biguanides obtained are in an acidic medium, e.g. B. in concentrated acetic acid, treated with an elemental halogen such as chlorine or bromine, or a halogen-donating compound such as organic perbromide, etc., the corresponding monohalogenated arylaminotriazine is formed. The reaction can be carried out at room temperature, but is preferably carried out with gentle heating. Instead of the pure triazine base, it is advantageous to start from the hydrochloride. Example i 21.39 (0.1 mol) i-phenyl biguanide chlorohydrate are dissolved in hot water and 5.39 (0.05 mol) sodium carbonate are added to the solution while stirring. After cooling, needle-shaped crystals separate out in an amount of 15 g. This product is heated to boiling with 80 ml of 85% technical grade formic acid for 4 hours and then 40 to 50 ml of formic acid are distilled off from the reaction mixture. The remainder is diluted with water, cooled in ice and concentrated alkali is added. The precipitate which separates out consists of 2-anilino-4-amino-i, 3, 5-triazine and is recrystallized from 40 to 50% alcohol. The pure product melts at 232 to 233 '.

Es ist zweckmäßig, unmittelbar das in langen, farblosen Kristallen anfallende Monochlorhydrat herzustellen, welches unter Zersetzung bei 258 bis 26o' schmilzt. Ausbeute: 9i °/o der Theorie.It is convenient to do this directly in long, colorless crystals to produce accruing monochlorohydrate, which decomposes at 258 to 26o ' melts. Yield: 91% of theory.

22,3 g (o,i M01) 2-Anilino-4-amino-i, 3, 5-triazinchlorhydrat werden in 500 ml o, i n-HCl bei 6o bis 70' gelöst und die schwach opalisierende Lösung filtriert. Zum Filtrat läßt man unter energischem Rühren 16 g Brom, gelöst in 4o ml Eisessig, zufließen. Das Brom entfärbt sich sofort. Das Gemisch wird io Minuten weitergerührt, in einem Eiswasserbad gekühlt, einige Stunden stehengelassen, worauf die ausgeschiedenen Kristalle abgesaugt, mit destilliertem Wasser und wenig Methanol gewaschen und getrocknet werden. Ausbeute: 82 °/o der Theorie.22.3 g (o, i M01) 2-anilino-4-amino-1,3,5-triazine chlorohydrate are dissolved in 500 ml o, i n-HCl at 6o to 70 'and the slightly opalescent solution is filtered. 16 g of bromine, dissolved in 40 ml of glacial acetic acid, are added to the filtrate with vigorous stirring. The bromine immediately discolours. The mixture is stirred for 10 minutes, cooled in an ice-water bath, left to stand for a few hours, whereupon the precipitated crystals are filtered off with suction, washed with distilled water and a little methanol and dried. Yield: 82% of theory.

Das Produkt schmilzt bei 284 bis 285° und weist nach Vermischen mit der nach Beispiel 2 des Hauptpatents aus 2- (p-Bromanilino)-4-amino-i, 3, 5-triazin erhaltenen Verbindung keine Schmelzpunkterniedrigung auf. Beispiel 2 3,749 (o,o2 Mol) der nach Beispiel i erhaltenen Base vom Schmp. 232 bis 233' werden unter Erwärmen in 40m1 Eisessig gelöst und die Lösung unter energischem Rühren mit 5,5 g (0,02 Mol) Pyridinhydrochlorid-Perbromid versetzt. Die Lösung entfärbt sich rasch. Beim Erkalten wird ein kristallinischer Niederschlag ausgeschieden, welcher abgesaugt und nach Beispiel i weiterverarbeitet wird. Ausbeute: 7o °/o der Theorie. Schmp. 283 bis 284'. Das Produkt ist mit der nach Beispiel 2 des Hauptpatents erhaltener. Monobromverbindung identisch. Die nach den Beispielen erhaltenen Monohalogenide können, gegebenenfalls auch ohne vorangehende Isolierung, nach Beispiel 3 des Hauptpatents weiterhalogeniert werden.The product melts at 284 to 285 ° and has after mixing with that according to Example 2 of the main patent from 2- (p-bromoanilino) -4-amino-i, 3, 5-triazine obtained compound no lowering of the melting point. Example 2 3.749 (o, o2 Mol) of the base obtained according to Example i and having a melting point of 232 to 233 'are added with heating dissolved in 40 ml of glacial acetic acid and the solution with vigorous stirring with 5.5 g (0.02 Mol) pyridine hydrochloride perbromide added. The solution quickly becomes discolored. At the When it cools, a crystalline precipitate is deposited, which is filtered off with suction and is further processed according to example i. Yield: 70% of theory. M.p. 283 to 284 '. The product is more similar to that obtained in Example 2 of the main patent. Monobromic connection identical. The monohalides obtained according to the examples can, optionally without prior isolation, according to Example 3 of the main patent be further halogenated.

Claims (2)

PATENTANSPRÜCHE: i. Abänderung des Verfahrens zur Herstellung von 2-Halogenarylamino-4-amino-I, 3, 5- triazinderivaten nach dem Patent 896492, dadurch gekennzeichnet, daß man i-Arylbiguanide der ringschließenden Kondensation unterwirft und die Kondensationsprodukte im aromatischen Kern in bekannter Weise monohalogeniert. PATENT CLAIMS: i. Modification of the process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives according to patent 896492, characterized in that i-aryl biguanides are subjected to the ring-closing condensation and the condensation products in the aromatic nucleus are monohalogenated in a known manner. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Monohalogenide, gegebenenfalls ohne vorherige Isolierung, noch weiterhalogeniert werden.2. The method according to claim i, characterized in that the monohalides, optionally further halogenated without prior isolation.
DER10480A 1951-05-03 1951-05-03 Process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives Expired DE910654C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER10480A DE910654C (en) 1951-05-03 1951-05-03 Process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER10480A DE910654C (en) 1951-05-03 1951-05-03 Process for the preparation of 2-haloarylamino-4-amino-1,3,5-triazine derivatives

Publications (1)

Publication Number Publication Date
DE910654C true DE910654C (en) 1954-05-06

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Country Status (1)

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