CH143233A - Process for the preparation of a mixture of compounds with a hydrogenated ring system. - Google Patents

Process for the preparation of a mixture of compounds with a hydrogenated ring system.

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Publication number
CH143233A
CH143233A CH143233DA CH143233A CH 143233 A CH143233 A CH 143233A CH 143233D A CH143233D A CH 143233DA CH 143233 A CH143233 A CH 143233A
Authority
CH
Switzerland
Prior art keywords
mixture
compounds
preparation
ring system
hydrogenated ring
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 CH143233A publication Critical patent/CH143233A/en

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

Description

  

      Verfahren    zur Darstellung eines Gemisches von Verbindungen mit hydriertem       Ringsystem.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Gemisches     der cis- und     trans-Verbindung    von folgender  Konstitution  
EMI0001.0005     
    welches dadurch gekennzeichnet ist, dass man       Crotonaldehyd    mit     Cyclopentadien    kondensiert.  Die neue Verbindung soll zur Herstellung  von     Farbstoffen,    pharmazeutischen Produkten  und     Riechstoffen    verwendet werden.  



  <I>Beispiel:</I>  8 Gewichtsteile     Crotonaldehyd    werden mit  10 Gewichtsteilen frisch destilliertem     Cyclo-          pentadien    4 Stunden im Druckgefäss auf  etwa 100   erhitzt, das Reaktionsgemisch wird  darauf der Destillation im Vakuum unter-         worfen,    wobei man bei 12 mm Druck ein  farbloses Öl erhält, welches bei 60-85  über  geht und ein Gemisch zweier     isomerer    Al  dehyde (cis,     trans)    darstellt.



      Process for the preparation of a mixture of compounds with a hydrogenated ring system. The subject of this additional patent is a process for the preparation of a mixture of the cis and trans compounds of the following constitution
EMI0001.0005
    which is characterized in that crotonaldehyde is condensed with cyclopentadiene. The new compound is to be used for the production of dyes, pharmaceutical products and fragrances.



  <I> Example: </I> 8 parts by weight of crotonaldehyde are heated with 10 parts by weight of freshly distilled cyclopentadiene to about 100 for 4 hours in a pressure vessel Oil is obtained, which passes over at 60-85 and is a mixture of two isomeric aldehydes (cis, trans).

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Gemi sches der cis- und trans-Verbindung von fol gender Konstitution EMI0001.0017 dadurch gekennzeichnet, dass man Orotonal- dehyd mit Cyclopentadien kondensiert. Das Gemisch siedet bei 12 mm Druck bei 60-85 . PATENT CLAIM: Process for the representation of a mixture of the cis and trans compounds of the following constitution EMI0001.0017 characterized in that orotaldehyde is condensed with cyclopentadiene. The mixture boils at 60-85 at 12 mm pressure.
CH143233D 1927-11-05 1928-11-02 Process for the preparation of a mixture of compounds with a hydrogenated ring system. CH143233A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143233X 1927-11-05
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143233A true CH143233A (en) 1930-10-31

Family

ID=25713754

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143233D CH143233A (en) 1927-11-05 1928-11-02 Process for the preparation of a mixture of compounds with a hydrogenated ring system.

Country Status (1)

Country Link
CH (1) CH143233A (en)

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