CH143241A - 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.

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Publication number
CH143241A
CH143241A CH143241DA CH143241A CH 143241 A CH143241 A CH 143241A CH 143241D A CH143241D A CH 143241DA CH 143241 A CH143241 A CH 143241A
Authority
CH
Switzerland
Prior art keywords
preparation
compound
ring system
hydrogenated ring
hydrogenated
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 CH143241A publication Critical patent/CH143241A/en

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

Description

  

  Verfahren zur Darstellung einer Verbindung mit hydriertem Ringsystem.    Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Trimetbyl-          tetrahydrobenzonitrils,    welches dadurch ge  kennzeichnet ist, dass man     Crotonsäurenitril     mit     1.3-Dimethylbiitadien    kondensiert. Die  neue Verbindung soll zur Herstellung von Farb  stoffen, pharmazeutischen Produkten und Riech  stoffen verwendet werden.    <I>Beispiel:</I>  In einem     Druckgefäss    werden 67 Gewichts  teile     Crotonsäurenitril    und 123 Gewichtsteile  1.     3-Dimethyl-butadieri    5 Stunden auf<B>1.600</B>  erhitzt. Die schwach gefärbte Flüssigkeit  wird im Vakuum destilliert.

   Nach einem  kleinen Vorlauf erhält man eine Hauptfraktion    vom     gp.is,ä    50-97 . Es bleibt eine geringe       Al-enge    einer zähen Masse zurück. Der grösste  Teil der Hauptfraktion destilliert bei Wieder  holung zwischen 93-95   bei 13,5 mm.



  Process for the preparation of a compound with a hydrogenated ring system. The subject of this additional patent is a process for the preparation of a trimethyltetrahydrobenzonitrile, which is characterized in that crotononitrile is condensed with 1,3-dimethylbiitadiene. The new compound is to be used to manufacture dyes, pharmaceutical products and fragrances. <I> Example: </I> 67 parts by weight of crotononitrile and 123 parts by weight of 1,3-dimethyl-butadieri are heated to <B> 1,600 </B> for 5 hours. The slightly colored liquid is distilled in vacuo.

   After a short run you get a main fraction from gp.is, ä 50-97. A slight Al-tightness of a tough mass remains. Most of the main fraction distills on repetition between 93-95 at 13.5 mm.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines Trimethyl- tetrahydrobenzonitrils, dadurch gekennzeich net, dass man Crotonsäurenitril mit 1.3-Di- methylbutadien kondensiert. Das neue Pro dukt siedet bei 13,5 mm bei<B>93-950</B> und bildet ein wasserhelles Öl. <B> PATENT CLAIM: </B> Process for the preparation of a trimethyl tetrahydrobenzonitrile, characterized in that crotonic acid nitrile is condensed with 1,3-dimethylbutadiene. The new product boils at 13.5 mm at <B> 93-950 </B> and forms a water-white oil.
CH143241D 1927-11-05 1928-11-02 Process for the preparation of a compound with a hydrogenated ring system. CH143241A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143241X 1927-11-05
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143241A true CH143241A (en) 1930-10-31

Family

ID=25713762

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143241D CH143241A (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) CH143241A (en)

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