CH143213A - Process for the preparation of a compound with a hydrogenated ring system. - Google Patents

Process for the preparation of a compound with a hydrogenated ring system.

Info

Publication number
CH143213A
CH143213A CH143213DA CH143213A CH 143213 A CH143213 A CH 143213A CH 143213D A CH143213D A CH 143213DA CH 143213 A CH143213 A CH 143213A
Authority
CH
Switzerland
Prior art keywords
compound
preparation
ring system
hydrogenated ring
dihydrobenzene
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 CH143213A publication Critical patent/CH143213A/en

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

  Verfahren zur Darstellung einer.     Ver        bindang        finit    hydriertem Ringsystem.         Gegenstand    dieses Zusatzpatentes ist ein  Verfahren zur Darstellung einer Verbindung  von folgender Konstitution  
EMI0001.0005     
    das dadurch     gekennzeiehnet    ist, dass man       Dihydrobenzol    mit     Maleinäureanhydrid    kon  densiert. Die neue Verbindung soll zur Her  stellung von Farbstoffen, pharmazeutischen  Produkten und Riechstoffen verwendet werden.

    <I>Beispiel:</I>  10 Gewichtsteile     Dihydrobenzol,    gelöst in  30 Gewichtsteilen reinem Benzol, werden mit  12     Gewichtsteilen        Maleinsäureanhydrid    ver  setzt. Die Reaktion setzt nach wenigen Mi  nuten ein und gibt sich durch deutliche Er  wärmung kund. Nach einigen Stunden fällt    das Umsatzprodukt als glitzernde, rein weisse  Kristallmasse aus der Lösung aus. Der  Schmelzpunkt des     Anhydrids    liegt bei 147  .



  Procedure for representing a. Ver bindang finite hydrogenated ring system. The subject of this additional patent is a method for the preparation of a compound of the following constitution
EMI0001.0005
    which is characterized by the fact that dihydrobenzene is condensed with maleic anhydride. The new compound is to be used for the manufacture of dyes, pharmaceutical products and fragrances.

    <I> Example: </I> 10 parts by weight of dihydrobenzene, dissolved in 30 parts by weight of pure benzene, are mixed with 12 parts by weight of maleic anhydride. The reaction sets in after a few minutes and is evident in the form of significant warming. After a few hours, the conversion product precipitates out of the solution as a glittering, pure white crystal mass. The melting point of the anhydride is 147.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Verbin dung von folgender Konstitution EMI0001.0013 dadurch gekennzeichnet, dass man Dihydro- benzol mit Maleinsäureanhydrid kondensiert. Der Schmelzpunkt des Anhydrids liegt bei 1470. PATENT CLAIM: Method for representing a compound of the following constitution EMI0001.0013 characterized in that dihydrobenzene is condensed with maleic anhydride. The melting point of the anhydride is 1470.
CH143213D 1927-11-05 1928-11-02 Process for the preparation of a compound with a hydrogenated ring system. CH143213A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143213X 1927-11-05
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143213A true CH143213A (en) 1930-10-31

Family

ID=25713734

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143213D CH143213A (en) 1927-11-05 1928-11-02 Process for the preparation of a compound with a hydrogenated ring system.

Country Status (1)

Country Link
CH (1) CH143213A (en)

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