CH325301A - Process for the preparation of 4,4'-diacyloxy-diphenyl-pyridyl-methanes - Google Patents

Process for the preparation of 4,4'-diacyloxy-diphenyl-pyridyl-methanes

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Publication number
CH325301A
CH325301A CH325301DA CH325301A CH 325301 A CH325301 A CH 325301A CH 325301D A CH325301D A CH 325301DA CH 325301 A CH325301 A CH 325301A
Authority
CH
Switzerland
Prior art keywords
pyridyl
diphenyl
methanes
preparation
diacyloxy
Prior art date
Application number
Other languages
German (de)
Inventor
August Dr Kottler
Ernst Dr Seeger
Original Assignee
Thomae Gmbh Dr K
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 Thomae Gmbh Dr K filed Critical Thomae Gmbh Dr K
Publication of CH325301A publication Critical patent/CH325301A/en

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  • Pyridine Compounds (AREA)

Description

  

  Verfahren zur Herstellung von     4,4'-Diacylogy-diphenyl-pyridyl-methanen            7m    Schweizer Patent     NTr.    320946 ist  ein Verfahren zur Herstellung von     4,4'-          Dioxy-dipheny        1-py        ridyl-methanen    beschrieben,       welches    dadurch gekennzeichnet ist, dass ein       1'yriclinaldehyd    oder     Pyridinketon    mit 2     Mol     eines in     p-Stellung    zur     Oxygruppe    eine Kon  densation zulassenden Phenols kondensiert  wird.

   Gemäss dem Schweizer Patent Nr. 323831  der Patentinhaberin können diese     4,4'-Dioxy-          dipheny        1-py        ridyl-methane    auch erhalten wer  den, indem man im     Kern    substituierte oder       umsubstituierte        Pyridinaldehyde    oder     Pyridin-          ketone    mit 2     Mol    eines Anilins     kondensiert,     das in     p-Stellung        zur        Aminogruppe    eine Kon  densation     zulä.sst,

      und indem man dann die  erhaltenen     4,4'-Diamino-diphenyl-pyridyl-me-          thane    durch     Diazotierung    und anschliessendes  Verkochen der     Diazoniumverbindungen    in die  entsprechenden     4,4'-Dioxy-diphenyl-pyridyl-          methane    überführt.  



  Die vorliegende Erfindung betrifft. nun  ein Verfahren     mir    Herstellung von     4,4'-Di-          aeyloxy-diphenyl-pyridy        1-methanen,    das da  durch gekennzeichnet ist, dass man     4,4'-Dioxy-          diphenyl-py        ridyl-methane        acyliert.     



  Die erhaltenen     4,4'-Diacyloxy-diphenyl-          py        ridyl-methane    sind neue Verbindungen und  zeichnen sich durch wertvolle therapeutische  Eigenschaften aus. Sie sind insbesondere wert  volle Laxativa und Desinfektionsmittel.    Als Ausgangsstoffe können     4,4'-Dioxy-di-          phenyl-pyridyl-methane    verwendet werden,  die     unsubstituiert    sind oder die in den     Phenyl-          resten        und/oder    im     Pyridinkern        Substituenten     tragen, z.

   B.     Alkyl-,        Aryl-,        Aralkyl-,        Alkoxy-          oder    weitere     Hydroxylgruppen.    Der Methan  rest kann noch durch einen weiteren vierten  organischen Rest, z. B. Kohlenwasserstoffrest,       substituiert    sein.  



  Die beiden eingeführten     Acylgruppen    sind  vorteilhaft     Acetylgruppen.    Zur     Acetylierung     kann man z. B.     Essigsäureanhydrid    verwen  den.  



  <I>. Beispiel</I>       (4,4'-Diacetoxy-diphenyl)-(pyridyl-2)-methan     
EMI0001.0066     
    5 g     4,4'-Dioxy-diphenyl-pyridyl-2-methan     werden mit. 5 g wasserfreiem     NatriLunacetat     und 20     em3        Essigsäureanhydrid    drei     Stunden     auf dem siedenden Wasserbad erhitzt. Das  erkaltete Reaktionsgemisch giesst man in Was-           ser,    wobei sich nach einiger Zeit eine farblose  Substanz abscheidet, welche man absaugt, mit.  Wasser wäscht und aus     wässrigem        Äthanol    um  kristallisiert. Man erhält farblos glänzende  Kristalle vom Schmelzpunkt 138  C.



  Process for the production of 4,4'-diacylogy-diphenyl-pyridyl-methanes 7m Swiss patent NTr. 320946 describes a process for the preparation of 4,4'-dioxy-dipheny-1-pyridyl-methanes, which is characterized in that a 1'yriclinaldehyd or pyridine ketone with 2 mol of a phenol permitting condensation in the p-position to the oxy group is condensed.

   According to the patentee's Swiss patent no. 323831, these 4,4'-dioxydipheny 1-pyridyl methanes can also be obtained by condensing pyridine aldehydes or pyridine ketones substituted or substituted in the core with 2 moles of an aniline which allows condensation in the p-position to the amino group,

      and by then converting the 4,4'-diamino-diphenyl-pyridyl-methanes obtained into the corresponding 4,4'-dioxy-diphenyl-pyridyl-methanes by diazotization and subsequent boiling of the diazonium compounds.



  The present invention relates to. now a process with the production of 4,4'-di-aeyloxy-diphenyl-pyridy 1-methanes, which is characterized by the fact that 4,4'-dioxydiphenyl-pyridyl-methane is acylated.



  The 4,4'-diacyloxy-diphenyl-pyridyl-methanes obtained are new compounds and are characterized by valuable therapeutic properties. They are particularly valuable laxatives and disinfectants. 4,4'-Dioxy-diphenyl-pyridyl-methanes which are unsubstituted or which have substituents in the phenyl radicals and / or in the pyridine nucleus can be used as starting materials, e.g.

   B. alkyl, aryl, aralkyl, alkoxy or other hydroxyl groups. The methane rest can still be replaced by another fourth organic residue, e.g. B. hydrocarbon radical, be substituted.



  The two acyl groups introduced are advantageously acetyl groups. For acetylation you can, for. B. acetic anhydride use the.



  <I>. Example (4,4'-Diacetoxy-diphenyl) - (pyridyl-2) -methane
EMI0001.0066
    5 g of 4,4'-dioxy-diphenyl-pyridyl-2-methane are mixed with. Heat 5 g of anhydrous sodium acetate and 20 cubic meters of acetic anhydride for three hours on a boiling water bath. The cooled reaction mixture is poured into water, after which a colorless substance separates out after a while, which is filtered off with suction. Washes water and recrystallizes from aqueous ethanol. Colorless, shiny crystals with a melting point of 138 ° C. are obtained.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von 4,4'-Di- acyloxy-diphenyl-pyridyl-methanen, dadurch gekennzeichnet, da.ss man 4,4'-Dioxy-diphenyl- pyridyl-niethane aeyliert. PATENT CLAIM Process for the preparation of 4,4'-di-acyloxy-diphenyl-pyridyl-methanes, characterized in that 4,4'-dioxy-diphenyl-pyridyl-niethanes are aeylated.
CH325301D 1952-03-17 1953-03-16 Process for the preparation of 4,4'-diacyloxy-diphenyl-pyridyl-methanes CH325301A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE325301X 1952-03-17
DE317159X 1952-12-09
DE120153X 1953-01-12

Publications (1)

Publication Number Publication Date
CH325301A true CH325301A (en) 1957-10-31

Family

ID=27180429

Family Applications (1)

Application Number Title Priority Date Filing Date
CH325301D CH325301A (en) 1952-03-17 1953-03-16 Process for the preparation of 4,4'-diacyloxy-diphenyl-pyridyl-methanes

Country Status (1)

Country Link
CH (1) CH325301A (en)

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