CH143248A - 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
CH143248A
CH143248A CH143248DA CH143248A CH 143248 A CH143248 A CH 143248A CH 143248D A CH143248D A CH 143248DA CH 143248 A CH143248 A CH 143248A
Authority
CH
Switzerland
Prior art keywords
preparation
compound
ring system
hydrogenated ring
acrolein
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 CH143248A publication Critical patent/CH143248A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/38—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings
    • C07C47/42—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings with a six-membered ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/69—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by addition to carbon-to-carbon double or triple bonds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • 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     Trimethyl-          tetralrydroberrzaldehyds,    welches dadurch ge  kennzeichnet ist, dass man     1.1.4-'frimethyl-          butadien    mit     Akrolein    kondensiert. Die neue  Verbindung soll zur Herstellung von Farb  stoffen,     pharmazeutischen    Produkten und       Riechstoffen    verwendet werden.  



       Beispiel:     96 Gewichtsteile 1.1 .     4-Trimethylbutadien     und 56 Gewichtsteile     Akrolein    werden in  einem Druckgefäss eine Stunde auf<B>100"</B> C  erhitzt. Das     RNaktionsgemisch    wird darauf  sofort der Destillation unterworfen.

   Nach  einem Vorlauf von unverändertem     Kohlen-          wasserstoff    und     Akrolein,    den man bei ge-         wöhnlichem    Druck     abdestilliert,    erhält man  eine bei 13 mm Druck zwischen 60 o C und  <B>1000</B> C siedende     Fraktion.    Nach zweimaligem  Destillieren erhält man eine einheitliche  Fraktion vorn Siedepunkt Kp. 2o 100-101o     C;     sie stellt ein wasserhelles,     bewegliches    Öl dar.



      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 trimethyl tetralrydroberrzaldehyde, which is characterized in that 1.1.4-'frimethylbutadiene is condensed with acrolein. The new compound is to be used in the manufacture of dyes, pharmaceutical products and fragrances.



       Example: 96 parts by weight 1.1. 4-Trimethylbutadiene and 56 parts by weight of acrolein are heated in a pressure vessel to 100 ° C. for one hour. The reaction mixture is then immediately subjected to distillation.

   After a first run of unchanged hydrocarbon and acrolein, which is distilled off at ordinary pressure, a fraction boiling between 60 ° C. and 1000 ° C. at 13 mm pressure is obtained. After distilling twice, a uniform fraction with a boiling point of bp 2o 100-101o C is obtained; it represents a water-white, mobile oil.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Trimethyl- tetrahydrobenzaldehyds, dadurch gekenn zeichnet, dass man 1.1.4-Trimethylbutadien mit Akrolein kDndensiert. Der Aldehyd siedet bei Kp. 2o 100-10l o C und stellt ein wasser helles, bewegliches Öl dar. PATENT CLAIM: Process for the preparation of a trimethyl tetrahydrobenzaldehyde, characterized in that 1.1.4-trimethylbutadiene is densed with acrolein. The aldehyde boils at bp 2o 100-10l o C and is a water-white, mobile oil.
CH143248D 1929-01-07 1929-01-07 Process for the preparation of a compound with a hydrogenated ring system. CH143248A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143248T 1929-01-07
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143248A true CH143248A (en) 1930-10-31

Family

ID=25713714

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143248D CH143248A (en) 1929-01-07 1929-01-07 Process for the preparation of a compound with a hydrogenated ring system.

Country Status (1)

Country Link
CH (1) CH143248A (en)

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