CH194452A - Process for the preparation of a compound of the phenanthrene series. - Google Patents

Process for the preparation of a compound of the phenanthrene series.

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Publication number
CH194452A
CH194452A CH194452DA CH194452A CH 194452 A CH194452 A CH 194452A CH 194452D A CH194452D A CH 194452DA CH 194452 A CH194452 A CH 194452A
Authority
CH
Switzerland
Prior art keywords
compound
phenanthrene
preparation
hydrogen halide
series
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH194452A publication Critical patent/CH194452A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung einer Verbindung der     Phenanthrenreihe.       Es wurde gefunden,     dass    man     Phenan-          thren    und seine     Derivate    herstellen kann,  wenn man     Iso-stilbenverbindungen    der allge  meinen     Formel:     
EMI0001.0008     
    (worin ein     oder    mehrere X     Substituenten    be  deuten, die miteinander auch weitere     carbo-          cyclische    oder     heterocyclische    Ringe bilden  können, und die     übrigen;

      X Wasserstoff be  deuten)     bezw.    die     entsprechenden    Benzylver-         bindungen    mit     halogenwas:serstoffabspalten-          den        Mitteln    behandelt.     Hierbei    erfolgt unter       Abspaltung    von     Halogenwasserstoff    Ring  schluss zum     Phenanthrenclerivat;    bei Verwen  dung der     entsprechenden        Benzylv.embindung          tritt    neben der Abspaltung von Halogenwas  serstoff gleichzeitig     Dehydrierung    ein.  



  Als     halogenwasserstoffabspaltende        Mittel     kann man     insbesondere    stark     alkalisch.    wir  kende     Mittel,    zweckmässig     unter    Zusatz von  hochsiedenden tertiären     Basen,,    verwenden.  



       Die    so     erhaltenen        Phenanthrenderivate          sind    zum Teil     neue,    zum     Teil    auf anderem  Wege schwer     zugängliche        Venbindungen.    Sie  sollen als     Zwischenprodukte        zur    Herstellung  von Farbstoffen     und        pharmazeutischen    Pro  dukten     Verwendung    finden.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Herstellung einer Verbin  dung der     Phenanthrenreihe,    welches dadurch  gekennzeichnet     ist,        dass    man     a-Phenyl-o-          chlor-hydrozimmtsäu,re    mit halogenwasser-      stoffabspaltenden Mitteln behandelt, zweck  mässig unter     Zwatz        eaner    hochsiedenden     ter-          tiären        Base.     



  Die so     erhaltene        Phenranthren-9-carbon-          säure        schmilzt        nach    einmaligem     Umkristalli-          sieren    aus Eisessig bei 25.3 bis 254' C und  zeigt die in der Literatur     beschriebenen        Ei-          genschaften.    Sie soll     als    Zwischenprodukt  für .die Herstellung von     Farbstoffen,    und       pharmazeutischen    Produkten Verwendung  finden.  



  <I>Beispiel:</I>  Eine     Mischung    von 90 Teilen     a-Phenyl-          o-chlor-hydrozimmtsäure,    450 Teilen     Ätzkali     und 900     Teilen        Chinolin    wird     ungefähr    zwei  Stunden     unter    Rühren und     Rückflusskühlung     zum Sieden erhitzt.

   Dann wird die Schmelze  auf ein     Gemisch    von     Eis    und Salzsäure ge  gossen, der entstandene Niederschlag abge  saugt und durch     Umlösen    aus wässeriger       Sodalösung    von geringen Mengen     a1kali-un-          löslicher    Produkte befreit. Man erhält so die       Phenanthren-9-carbonsäure    in einer für die  meisten Zwecke genügenden Reinheit.



  Process for the preparation of a compound of the phenanthrene series. It has been found that phenanthene and its derivatives can be produced by using iso-stilbene compounds of the general formula:
EMI0001.0008
    (in which one or more X are substituents which can also form further carbocyclic or heterocyclic rings with one another, and the others;

      X denote hydrogen) respectively. the corresponding benzyl compounds are treated with agents that split off hydrogen halide. This takes place with elimination of hydrogen halide ring closure to the phenanthrene derivative; When using the corresponding benzyl compound, dehydrogenation occurs at the same time as the elimination of hydrogen halide.



  As an agent which splits off hydrogen halide, one can in particular be strongly alkaline. we kende means, expediently with the addition of high-boiling tertiary bases ,, use.



       Some of the phenanthrene derivatives obtained in this way are new, some of which are difficult to access by other means. They should be used as intermediates for the production of dyes and pharmaceutical pro ducts.



  The present patent now relates to a process for the production of a compound of the phenanthrene series, which is characterized in that a-phenyl-o-chlorohydrozinntsäu, re treated with hydrogen halide-releasing agents, expediently with Zwatz ean high-boiling tertiary Base.



  The phenranthrene-9-carboxylic acid obtained in this way melts after recrystallization once from glacial acetic acid at 25.3 to 254 ° C. and shows the properties described in the literature. It should be used as an intermediate for the manufacture of dyes and pharmaceutical products.



  <I> Example: </I> A mixture of 90 parts of a-phenyl-o-chlorohydrocyclic acid, 450 parts of caustic potash and 900 parts of quinoline is heated to the boil for about two hours while stirring and refluxing.

   The melt is then poured onto a mixture of ice and hydrochloric acid, the precipitate formed is filtered off with suction and freed from small amounts of alkali-insoluble products by dissolving in aqueous soda solution. The phenanthrene-9-carboxylic acid is thus obtained in a purity sufficient for most purposes.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer Verbin dung der Phenanthrenreihe, dadurch gekenn zeichnet, dass man a-Phenyl-o-chlorhydro- zimmtsäure mit halogenwasserstoffaIspal- tenden Mitteln behandelt. Die so erhaltene Phenanthren-9-carbon- säure schmilzt nach einmaligem Umkristalli- sieren aus Eisessig bei 253 bis 254' C und zeigt die in der Literatur beschriebenen Ei genschaften. PATENT CLAIM: A process for the production of a compound of the phenanthrene series, characterized in that a-phenyl-o-chlorohydrocyclic acid is treated with agents that split hydrogen halide. The phenanthrene-9-carboxylic acid obtained in this way, after recrystallizing once from glacial acetic acid, melts at 253 to 254 ° C. and exhibits the properties described in the literature. Sie soll als Zwischenprodukt für die Herstellung von Farbstoffen und pharmazeutischen Produkten Verwendung finden:. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man das Verfahren un ter Zusatz einer hochsiedenden tertiären Base durchführt. It should be used as an intermediate for the manufacture of dyes and pharmaceutical products: SUBCLAIM: Process according to claim, characterized in that the process is carried out with the addition of a high-boiling tertiary base.
CH194452D 1935-08-10 1936-08-07 Process for the preparation of a compound of the phenanthrene series. CH194452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE194452X 1935-08-10

Publications (1)

Publication Number Publication Date
CH194452A true CH194452A (en) 1937-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH194452D CH194452A (en) 1935-08-10 1936-08-07 Process for the preparation of a compound of the phenanthrene series.

Country Status (1)

Country Link
CH (1) CH194452A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436270A (en) * 1944-05-22 1948-02-17 Schering Corp Polyiodo diaryl aliphatic acids and process for their manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436270A (en) * 1944-05-22 1948-02-17 Schering Corp Polyiodo diaryl aliphatic acids and process for their manufacture

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