CH134098A - Process for the preparation of a di-chloroacetyl-o, o'-dimethoxy-diphenyl ether. - Google Patents

Process for the preparation of a di-chloroacetyl-o, o'-dimethoxy-diphenyl ether.

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Publication number
CH134098A
CH134098A CH134098DA CH134098A CH 134098 A CH134098 A CH 134098A CH 134098D A CH134098D A CH 134098DA CH 134098 A CH134098 A CH 134098A
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CH
Switzerland
Prior art keywords
diphenyl ether
dimethoxy
chloroacetyl
preparation
ether
Prior art date
Application number
Other languages
German (de)
Inventor
Schering-Kahlbaum A G
Original Assignee
Schering Kahlbaum 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
Application filed by Schering Kahlbaum Ag filed Critical Schering Kahlbaum Ag
Publication of CH134098A publication Critical patent/CH134098A/en

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Description

  

  Verfahren zur Herstellung eines     Di-chloracetyl-o,        o'-dimethogy-dipbenyläthers.       Es ist bekannt, dass bei Einwirkung von       Acetylchlorid    oder     Benzoylchlorid    auf     Di-          phenyläther    (B. 38,2492)     Phenoxyacetophenon     beziehungsweise     Phenoxybenzophenon    ent  steht.

   Es wurde nunmehr gefunden, dass  unter besonderen Bedingungen sich über  raschenderweise auch die     co-halogenierten          Phenoxyacetophenone    beziehungsweise ihre       Substitutionsprodukte    durch Einwirkung von       halogenierten        Acylbalogeniden    darstellen las  sen.

   Die Entstehung dieser Verbindungen  ist umso überraschender, als nach der zitierten  Literaturstelle sich zum Beispiel aus     Acetyl-          chlorid    und     Diphenyläther    nur das     Phenoxy-          acetophenon    darstellen lässt, während bei An  wendung von     halogenierten        Acylchloriden     sich vorzugsweise     diacylierte        Diphenyläther     bilden und nur bei Einhaltung von ganz  besonderen Bedingungen die     monoacylierten     Verbindungen entstehen.  



  Gegenstand des vorliegenden Patentes  ist ein Verfahren zur Herstellung eines     Di-          chloracetyl-o,        o'-dimethoxy-diphenyläthers    von  der Formel:  
EMI0001.0027     
    dadurch gekennzeichnet, dass man     Chlorace-          tylchlorid    auf o,     o'-Dimethoxy-diphenyläther     einwirken lässt. Das Reaktionsprodukt bil  det farblose, bei     15411    C schmelzende, in  Wasser unlösliche, in heissen organischen       Solventien,    wie Benzol und Alkohol, lösliche  Prismen.

   Die Verbindung, irr der die*     co-          Chloratome    gegen- Ammoniak oder Amine  ausgetauscht werden können, soll als Zwi  schenprodukt für die Herstellung therapeu  tisch wirksamer Substanzen dienen.  



  <I>Beispiel:</I>  Zu einem Gemisch von 12     gr    Aluminium  chlorid mit 10     gr    o,     o'-Dimetboxy-diphenyläther     lässt man bei Zimmertemperatur 10     gr        Chlorace-          tylchlorid        zutropfen,    man zerlegt das Reak  tionsprodukt mit Eis und kristallisiert das  ausfallende Produkt aus Benzol um.

   Die Ver  bindung ist ein     dichloracetyllierter    o,     o'-Di-          methoxy-diphenyläther.    Sie kristallisiert in      Form von farblosen Prismen vom Schmelz  punkt 154 , ist unlöslich in     H20,    löslich ,in  heissen organischen     Solventien,    wie Benzol  und Alkohol.



  Process for the preparation of a di-chloroacetyl-o, o'-dimethogy-dipbenyl ether. It is known that the action of acetyl chloride or benzoyl chloride on diphenyl ether (B. 38,2492) produces phenoxyacetophenone or phenoxybenzophenone.

   It has now been found that, under special conditions, surprisingly, the co-halogenated phenoxyacetophenones or their substitution products can also be produced by the action of halogenated acyl balogenides.

   The formation of these compounds is all the more surprising as, according to the cited reference, for example, acetyl chloride and diphenyl ether can only be used to produce phenoxyacetophenone, while when halogenated acyl chlorides are used, diacylated diphenyl ethers are preferably formed and only if very special conditions are met the monoacylated compounds are formed.



  The subject of the present patent is a process for the preparation of a dichloroacetyl-o, o'-dimethoxy-diphenyl ether of the formula:
EMI0001.0027
    characterized in that chloroacetyl chloride is allowed to act on o, o'-dimethoxydiphenyl ether. The reaction product forms colorless prisms that melt at 15411 C, are insoluble in water and soluble in hot organic solvents such as benzene and alcohol.

   The compound, irr which the * co-chlorine atoms can be exchanged for ammonia or amines, should serve as an intermediate product for the production of therapeutically active substances.



  <I> Example: </I> To a mixture of 12 grams of aluminum chloride with 10 grams of o, o'-dimetboxy-diphenyl ether, 10 grams of chloroacetyl chloride are added dropwise at room temperature, the reaction product is broken down with ice and the precipitating product is crystallized Product made from benzene.

   The connection is a dichloroacetylated o, o'-dimethoxy-diphenyl ether. It crystallizes in the form of colorless prisms with a melting point of 154, is insoluble in H2O, soluble in hot organic solvents such as benzene and alcohol.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von p # p'-Di- chloracetyl-o, o'-dimethoxy-diphenyläther, da durch gekennzeichnet, dass man Ohloracetyl- chlorid auf o-o'-Di-methoxydiphenyläther ein wirken lässt. Das Reaktionsprodukt bildet farblose, bei 154' C schmelzende, in Wasser unlösliche, in heissen organischen Solventien, wie Benzol und Alkohol, lösliche Prismen. PATENT CLAIM: Process for the production of p # p'-dichloroacetyl-o, o'-dimethoxy-diphenyl ether, characterized in that Ohloroacetyl chloride can act on o-o'-dimethoxydiphenyl ether. The reaction product forms colorless prisms which melt at 154 ° C., are insoluble in water and soluble in hot organic solvents such as benzene and alcohol. Die Verbin dung, in der, die w-Chloratome gegen Am moniak oder Amine ausgetauscht werden können, soll als Zwischenprodukt für die Herstellung therapeutisch wirksamer Sub stanzen dienen. The connec tion in which the w-chlorine atoms can be exchanged for ammonia or amines should serve as an intermediate for the production of therapeutically active substances.
CH134098D 1927-03-09 1928-02-28 Process for the preparation of a di-chloroacetyl-o, o'-dimethoxy-diphenyl ether. CH134098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE134098X 1927-03-09

Publications (1)

Publication Number Publication Date
CH134098A true CH134098A (en) 1929-07-15

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ID=5665319

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134098D CH134098A (en) 1927-03-09 1928-02-28 Process for the preparation of a di-chloroacetyl-o, o'-dimethoxy-diphenyl ether.

Country Status (1)

Country Link
CH (1) CH134098A (en)

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