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CH100851A - Process for the preparation of a heterocyclic compound of the naphthalene series. - Google Patents

Process for the preparation of a heterocyclic compound of the naphthalene series.

Info

Publication number
CH100851A
CH100851A CH100851DA CH100851A CH 100851 A CH100851 A CH 100851A CH 100851D A CH100851D A CH 100851DA CH 100851 A CH100851 A CH 100851A
Authority
CH
Switzerland
Prior art keywords
heterocyclic compound
preparation
naphthalene series
oxalyl chloride
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH100851A publication Critical patent/CH100851A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/74Naphthothiophenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

  

  Verfahren zur Herstellung einer     lieterocyelischen        Verbindung    der     Naphtalinreihe.       Es wurde gefunden, dass man zu einer  technisch wertvollen     heterocyclischen    Ver  bindung der     Naplhtalinreihe    gelangen kann,  wenn man auf     a-Thionaphtol,    gegebenenfalls  in Gegenwart von     Verdünnungs-    und Konden  sationsmitteln,     Oxalylchlori.d    einwirken lässt.  Die so erhaltene neue     Verbindung,    das     a-          Naphtothiofuran-1:2-dion,    bildet ein rotes,  kristallinisches Pulver und schmilzt bei  <B>1680.</B>  



  <I>Beispiele:</I>  1. 160 Teile     a-Thionaphtol    werden in  635     Oxalylchlorid    eingetragen. Die Mischung  wird einige Zeit bei gewöhnlicher Tempera  tur durchgerührt, hierauf langsam bis zum  Siedepunkt des     Oxalylchlorids    erwärmt .und  dieses     abdestilliert.    Der Rückstand wird  noch einige Stunden auf höhere Temperatur  erhitzt; dann wird das entstandene     a-I\Taphto-          thiofuran-1:2-dion    mit einer wässerigen       Sodalösung    extrahiert und daraus mit Salz  säure abgeschieden.  



  2. 160 Teile     a-Thionaphtol    werden in  eine Lösung von 190,5 Teilen     Oxalylchlorid       und 570 Teilen     Schwefelkohlenstoff    ein  getragen und einige Stunden am     Rückfluss-          kühler    gekocht. Hierauf werden der Schwe  felkohlenstoff und das überschüssige     Oxalyl-          chlorid        abdestilliert.    Der Rückstand, wieder  in Schwefelkohlenstoff gelöst, wird nach  Zugabe von 132 Teilen Aluminiumchlorid  weiter einige Stunden gekocht.

   Die ganze  Masse wird dann in     verdünnte    Salzsäure ein  getragen, der Schwefelkohlenstoff     mit    Was  serdampf     abdestilliert,    das rohe     a-Naphto-          thiofuran-1:2-dion        abfiltriert    und wie im  Beispiel 1 angegeben gereinigt.



  Process for the preparation of a lieterocyelic compound of the naphthalene series. It has been found that a technically valuable heterocyclic Ver bond of the naplhtalin series can be achieved if Oxalylchlori.d is allowed to act on α-thionaphtol, optionally in the presence of diluents and condensation agents. The new compound obtained in this way, the a-naphtothiofuran-1: 2-dione, forms a red, crystalline powder and melts at <B> 1680. </B>



  <I> Examples: </I> 1. 160 parts of a-thionaphtol are introduced into 635 oxalyl chloride. The mixture is stirred for some time at normal temperature, then slowly warmed to the boiling point of the oxalyl chloride and this is distilled off. The residue is heated to a higher temperature for a few hours; then the resulting α-I \ taphthiofuran-1: 2-dione is extracted with an aqueous soda solution and separated from it with hydrochloric acid.



  2. 160 parts of a-thionaphtol are introduced into a solution of 190.5 parts of oxalyl chloride and 570 parts of carbon disulfide and refluxed for a few hours. The carbon sulphide and the excess oxalyl chloride are then distilled off. The residue, redissolved in carbon disulfide, is boiled for a few more hours after 132 parts of aluminum chloride have been added.

   The whole mass is then introduced into dilute hydrochloric acid, the carbon disulfide is distilled off with water vapor, the crude α-naphthiofuran-1: 2-dione is filtered off and purified as indicated in Example 1.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer hetero- cyclischen Verbindung der Naphtalinreihe, dadurch gekennzeichnet, dass man auf a-Thio= naphtol Oxalylchlorid einwirken lässt. Das so erhaltene. a-Naphtothiofuran-1: 2-dion bildet ein rotes, kristallinisches Pulver und schmilzt bei 168 . PATENT CLAIM: Process for the production of a heterocyclic compound of the naphthalene series, characterized in that oxalyl chloride is allowed to act on a-thio = naphthol. The thus obtained. α-Naphtothiofuran-1: 2-dione forms a red, crystalline powder and melts at 168.
CH100851D 1920-12-11 1922-12-02 Process for the preparation of a heterocyclic compound of the naphthalene series. CH100851A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH92688T 1920-12-11
CH100851T 1922-12-02

Publications (1)

Publication Number Publication Date
CH100851A true CH100851A (en) 1924-01-02

Family

ID=25704549

Family Applications (1)

Application Number Title Priority Date Filing Date
CH100851D CH100851A (en) 1920-12-11 1922-12-02 Process for the preparation of a heterocyclic compound of the naphthalene series.

Country Status (1)

Country Link
CH (1) CH100851A (en)

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