CH312530A - Process for making a pyridazone. - Google Patents

Process for making a pyridazone.

Info

Publication number
CH312530A
CH312530A CH312530DA CH312530A CH 312530 A CH312530 A CH 312530A CH 312530D A CH312530D A CH 312530DA CH 312530 A CH312530 A CH 312530A
Authority
CH
Switzerland
Prior art keywords
phenyl
pyridazon
parts
water
pyridazone
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 CH312530A publication Critical patent/CH312530A/en

Links

Description

  

  Verfahren zur Herstellung eines     Pyridazons.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung von 6     ,-VIorpho-          lino-2-phenyl-pyiidazon-(3)    der Formel  
EMI0001.0004     
    Die neue     Verbindung    wird erhalten, wenn  man     2-Phenyl-pyridazon-(3),    das in     6-Stel-          lung    einen austauschfähigen     Substituenten     aufweist, mit     Morpholin    umsetzt.

   Ein aus  tausehfähiger     Substituent    ist zum Beispiel ein  Halogen-, insbesondere ein Chloratom, oder  auch eine substituierte     Oxy-,    wie     Phenoxy-,     oder     Mereapto-,    wie     bTethylmercaptogruppe.     



  Die Reaktion kann in An- oder Abwesen  heit von Verdünnungsmitteln     und/oder    Kon  densationsmitteln     undloder    Katalysatoren im  offenen oder geschlossenen Gefäss unter Druck  durchgeführt werden.  



  Das     Verfahrensprodukt,    das     6-Morpliolino-          2-phenyl-pyridazon-(3)    vom F. =181-183 ,  ist neu. Es zeigt eine     antipyretische    und     anal-          getischeWirkung    und soll als Heilmittel Ver  wendung finden.  



  Die Erfindung wird im nachfolgenden Bei  spiel. näher beschrieben. Zwischen Gewichts  teil und     Volumteil    besteht die gleiche Bezie-         hung    wie zwischen     Gramm    und Kubikzenti  meter.  



  <I>Beispiel:</I>  57 Gewichtsteile     2-Phenyl-6-chlor-pyrid-          azon-(3)    werden mit 140 Gewichtsteilen     Mor-          pholin    10 Stunden auf 150  erhitzt. Das Re  aktionsgemisch     wird    in 630     Volumteilen        2n-          Salzsäure    heiss gelöst     und    nach dem Erkalten       genutscht.    Der Rückstand     wird    in     96o/oigem     Äthanol heiss gelöst, die Lösung heiss durch  Zugabe von konzentriertem wässerigem Am  moniak alkalisch gestellt, über Tierkohle fil  triert und mit Wasser versetzt,

   worauf in der  Kälte das     6-Morpholino-2-phenyl-pyridazon-(3)     auskristallisiert und     abgenutseht        wird.    Es  schmilzt nach     Umkristallisieren    aus     Äthanol-          Wasser    bei 181-183 .  



  Das als Ausgangsstoff     verwendete        2-Phe-          nyl-6-chlor-pyridazon-(3)    kann auf folgende  Weise hergestellt werden:  235 Gewichtsteile     Maleinsäureanhydrid     werden in 2000     Volumteilen    Eisessig gelöst.  und mit einer Lösung von 270 Gewichtstei  len     Phenylhydrazin    in 500     Volumteilen    Eis  essig 3 Stunden     -unter        Rückfluss    gekocht. Die  heisse     Lösung        wird    dann unter Rühren auf  700     Volumteile    Wasser gegossen, wobei Kri  stallisation eintritt.

   Die gekühlte Mischung  wird     genutscht,    der Rückstand mit Wasser  gewaschen, zur Reinigung in     ln-Sodalösung     gelöst und nach Filtrieren mit     2n-Salzsäure     wieder ausgefällt. Der Niederschlag wird     ge-          nutscht,    mit Wasser gewaschen und getrock  net.

   Das so erhaltene 2-Phenyl-6-oxy-pyrid-           azon-(3)        schmilzt    bei     272-274 .    100 Gewichts  teile desselben werden mit 750     Volumteilen          Phosphoroxychlorid    1 Stunde auf dem sieden  den Wasserbad erhitzt, die     Lösung    unter Rüh  ren vorsichtig auf 5500     Gewichtsteile    Eis ge  gossen und nach einstündigem Stehen in der  Kälte der Niederschlag     abgenutscht.    Man  wäscht ihn mit Wasser und kristallisiert ihn  aus Wasser um.

   Das so erhaltene     2-Phenyl-          6-ehlor-pyridazon-(3)    der Formel  
EMI0002.0011     
         schmilzt    bei 116-118 .



  Process for making a pyridazone. The present patent is a process for the preparation of 6, -VIorpholino-2-phenyl-pyiidazon- (3) of the formula
EMI0001.0004
    The new compound is obtained when 2-phenyl-pyridazon- (3), which has an exchangeable substituent in the 6-position, is reacted with morpholine.

   A substituent that can be substituted is, for example, a halogen, especially a chlorine atom, or a substituted oxy, such as phenoxy, or mereapto, such as methylmercapto group.



  The reaction can be carried out in the presence or absence of diluents and / or condensation agents and / or catalysts in an open or closed vessel under pressure.



  The product of the process, the 6-Morpliolino-2-phenyl-pyridazon- (3) of F. = 181-183, is new. It shows an antipyretic and analgesic effect and is said to be used as a remedy.



  The invention is used in the following example. described in more detail. There is the same relationship between the weight part and the volume part as there is between grams and cubic centimeters.



  <I> Example: </I> 57 parts by weight of 2-phenyl-6-chloro-pyridazon- (3) are heated to 150 with 140 parts by weight of morpholine for 10 hours. The reaction mixture is dissolved in 630 parts by volume of hot 2N hydrochloric acid and suction filtered after cooling. The residue is dissolved in 96% hot ethanol, the solution is made hot alkaline by adding concentrated aqueous ammonia, filtered over animal charcoal and mixed with water.

   whereupon the 6-morpholino-2-phenyl-pyridazon- (3) crystallizes out in the cold and is removed. After recrystallization from ethanol-water, it melts at 181-183.



  The 2-phenyl-6-chloropyridazon- (3) used as starting material can be prepared in the following manner: 235 parts by weight of maleic anhydride are dissolved in 2000 parts by volume of glacial acetic acid. and boiled under reflux for 3 hours with a solution of 270 parts by weight of phenylhydrazine in 500 parts by volume of glacial acetic acid. The hot solution is then poured into 700 parts by volume of water with stirring, crystallization occurring.

   The cooled mixture is suction filtered, the residue is washed with water, dissolved in 1N soda solution for cleaning and precipitated again after filtration with 2N hydrochloric acid. The precipitate is filtered off with suction, washed with water and dried.

   The 2-phenyl-6-oxy-pyridazon- (3) thus obtained melts at 272-274. 100 parts by weight of the same are heated with 750 parts by volume of phosphorus oxychloride for 1 hour on the boiling water bath, the solution is carefully poured onto 5500 parts by weight of ice while stirring and the precipitate is suction filtered after standing in the cold for one hour. It is washed with water and recrystallized from water.

   The 2-phenyl-6-chloro-pyridazon- (3) of the formula obtained in this way
EMI0002.0011
         melts at 116-118.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Pyrid- azons, dadurch gekennzeichnet, dass man 2-Phenyl-pyridazon- (3), das in 6-Stellung einen austauschfähigen Substituenten auf weist, mit Morpholin umsetzt. Das Verfahrensprodukt, das 6-Morpholino- 2-phenyl-pyridazon-(3) vom F. -18l-183 , ist neu. Es soll als Heilmittel Verwendung fin den. UNTERANSPRÜCHE: 1. PATENT CLAIM Process for the production of a pyridazone, characterized in that 2-phenyl-pyridazon- (3), which has an exchangeable substituent in the 6-position, is reacted with morpholine. The process product, 6-morpholino-2-phenyl-pyridazon- (3) from F. -18l-183, is new. It is said to be used as a remedy. SUBCLAIMS: 1. Verfahren nach Patentansprueh, da durch gekennzeichnet, dass man 2-Phenyl-6- halogen-pyridazon-(3) mit Moipholin umsetzt. 2. Verfahren nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass man 2-Phenyl-6-ehlor-pyridazon-(3) mit Morpholin umsetzt. Process according to patent claim, characterized in that 2-phenyl-6-halo-pyridazon- (3) is reacted with moipholine. 2. The method according to claim and dependent claim 1, characterized in that 2-phenyl-6-chloro-pyridazon- (3) is reacted with morpholine.
CH312530D 1952-06-20 1952-06-20 Process for making a pyridazone. CH312530A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH310245T 1952-06-20
CH312530T 1952-06-20

Publications (1)

Publication Number Publication Date
CH312530A true CH312530A (en) 1955-12-31

Family

ID=25735638

Family Applications (1)

Application Number Title Priority Date Filing Date
CH312530D CH312530A (en) 1952-06-20 1952-06-20 Process for making a pyridazone.

Country Status (1)

Country Link
CH (1) CH312530A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8304413B2 (en) 2008-06-03 2012-11-06 Intermune, Inc. Compounds and methods for treating inflammatory and fibrotic disorders
US8741936B2 (en) 2005-05-10 2014-06-03 Intermune, Inc. Method of modulating stress-activated protein kinase system
US9359379B2 (en) 2012-10-02 2016-06-07 Intermune, Inc. Anti-fibrotic pyridinones
US10233195B2 (en) 2014-04-02 2019-03-19 Intermune, Inc. Anti-fibrotic pyridinones

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10010536B2 (en) 2005-05-10 2018-07-03 Intermune, Inc. Method of modulating stress-activated protein kinase system
US8741936B2 (en) 2005-05-10 2014-06-03 Intermune, Inc. Method of modulating stress-activated protein kinase system
US9527816B2 (en) 2005-05-10 2016-12-27 Intermune, Inc. Method of modulating stress-activated protein kinase system
US8969347B2 (en) 2008-06-03 2015-03-03 Intermune, Inc. Compounds and methods for treating inflammatory and fibrotic disorders
US9290450B2 (en) 2008-06-03 2016-03-22 Intermune, Inc. Compounds and methods for treating inflammatory and fibrotic disorders
USRE47142E1 (en) 2008-06-03 2018-11-27 Intermune, Inc. Compounds and methods for treating inflammatory and fibrotic disorders
US8304413B2 (en) 2008-06-03 2012-11-06 Intermune, Inc. Compounds and methods for treating inflammatory and fibrotic disorders
US9675593B2 (en) 2012-10-02 2017-06-13 Intermune, Inc. Anti-fibrotic pyridinones
US9359379B2 (en) 2012-10-02 2016-06-07 Intermune, Inc. Anti-fibrotic pyridinones
US10376497B2 (en) 2012-10-02 2019-08-13 Intermune, Inc. Anti-fibrotic pyridinones
US10898474B2 (en) 2012-10-02 2021-01-26 Intermune, Inc. Anti-fibrotic pyridinones
US10233195B2 (en) 2014-04-02 2019-03-19 Intermune, Inc. Anti-fibrotic pyridinones
US10544161B2 (en) 2014-04-02 2020-01-28 Intermune, Inc. Anti-fibrotic pyridinones

Similar Documents

Publication Publication Date Title
CH312530A (en) Process for making a pyridazone.
CH312531A (en) Process for making a pyridazone.
AT332877B (en) PROCESS FOR THE PREPARATION OF NEW 6-AZA-1,2-DIHYDRO-3H-1,4-BENZODIAZEPINES, THEIR OPTICAL ISOMERS AND THEIR SALTS
DE921265C (en) Process for the preparation of aryl-substituted pyrazoline compounds
DE644909C (en) Process for the preparation of phenylaminopropanols
DE1000395B (en) Process for the preparation of substituted 4-oxycoumarins
AT158872B (en) Process for the production of 5.5-disubstituted or 1.5.5-trisubstituted barbituric acids.
AT211816B (en) Process for the preparation of new polyiodinated benzoyl compounds
AT133505B (en) Process for the preparation of ω-Oxyacylaminobenzolarsin- or -stibinoxden or ω-Oxyacylaminobenzolarsin- or -stibinsäuren.
DE845347C (en) Process for the preparation of pyridine-mercury compounds
AT92407B (en) Process for the preparation of 1-allyl-3,7-dimethylxanthine.
CH313319A (en) Process for making a pyridazone
CH184422A (en) Process for the preparation of 2-methyl-4-aminoquinolyl-6-melamine.
CH333078A (en) Process for the production of new anesthetic agents
CH182585A (en) Process for the preparation of a heterocyclic amino compound.
CH313321A (en) Process for making a pyridazone
CH127523A (en) Process for the preparation of 3 &#39;, 4&#39;-diamino-benzoyl-o-benzoic acid.
CH200061A (en) Process for the preparation of a diphenyl series hydrazine.
CH313317A (en) Process for making a pyridazone
DE1137019B (en) Process for the preparation of four or five times iodinated benzoic acid esters or amides
CH293011A (en) Process for the production of a new quinoline derivative.
CH213388A (en) Process for producing a thiazolium compound.
CH185607A (en) Process for the preparation of N1N2-di- (2-methyl-4-aminoquinolyl-6) -N3-diethylmelamine.
CH126194A (en) Process for the preparation of a benzobenzanthronecarboxylic acid.
CH210091A (en) Process for the preparation of phthalimide-4-sulfonamide.