CH143254A - 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
CH143254A
CH143254A CH143254DA CH143254A CH 143254 A CH143254 A CH 143254A CH 143254D A CH143254D A CH 143254DA CH 143254 A CH143254 A CH 143254A
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 CH143254A publication Critical patent/CH143254A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cosmetics (AREA)
  • Fats And Perfumes (AREA)
  • Hydrogenated Pyridines (AREA)

Description

  

  Verfahren zur Darstellung einer Verbindung mit hydriertem     Ringsystem.            Caegenstand    dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines neuen     Methyl-          tetrahydrobenzaldebyds,    welches dadurch ge  kennzeichnet ist, dass man     1-Methylbutadien          (Piperylen)        finit        Akrolein    kondensiert. Die  neue Verbindung soll zur Herstellung von  Farbstoffen, pharmazeutischen Produkten und       Riechstoffen    verwendet werden.  



  <I>Beispiel:</I>  68     lxewichtsteile        1-3lethylbutadien        (Pi-          perylen)    und 56 Gewichtsteile     Akrolein    wer  den in einem Druckgefäss eine Stunde auf  100   C erhitzt. Hierauf werden das unver  änderte     Piperylen    und     Akrolein    bei gewöhn  lichem Druck     abdestilliert.    Beim Destillieren  im Vakuum wird dann eine bei 13 mm  Druck zwischen 55   C und 75   C siedende  Fraktion erhalten. Die Hauptmenge zeigt  nach zweimaliger Wiederholung der Destil  lation den     Siedepunkt    Kp.<B>11</B> 59<B>0</B> C.

      Der so rein erhaltene Aldehyd stellt ein  wasserhelles, bewegliches, lichtbrechendes Öl  dar. Er besitzt einen charakteristischen, an       Isovaler-    und     Tetrahydrobenzaldehyd    erin  nernden Geruch.



  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 new methyl-tetrahydrobenzaldebyd, which is characterized in that 1-methylbutadiene (piperylene) finitely condensed acrolein. The new compound is intended to be used in the manufacture of dyes, pharmaceutical products and fragrances.



  <I> Example: </I> 68 parts by weight 1-3lethylbutadiene (perylene) and 56 parts by weight acrolein are heated to 100 C for one hour in a pressure vessel. The unchanged piperylene and acrolein are then distilled off at the usual pressure. When distilling in vacuo, a fraction boiling between 55 ° C. and 75 ° C. at a pressure of 13 mm is obtained. After the distillation has been repeated twice, the main amount shows the boiling point bp <B> 11 </B> 59 <B> 0 </B> C.

      The pure aldehyde obtained in this way is a water-white, mobile, light-refracting oil. It has a characteristic odor reminiscent of isovaleric and tetrahydrobenzaldehyde.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen 1lethyltetrahydrobenzaldehyds, dadurch ge kennzeichnet, dass man 1-Methylbutadien (Piperylen) mit Akrolein kondensiert. Der Aldehyd siedet bei gp. i1 59 C und stellt ein wasserhelles, bewegliches, licht brechendes Öl dar. Er besitzt einen charak teristischen, an Isovaler- und Tetrahydro- benzaldehyd erinnernden Geruch. PATENT CLAIM: Process for the preparation of a new 1-methyltetrahydrobenzaldehyde, characterized in that 1-methylbutadiene (piperylene) is condensed with acrolein. The aldehyde boils at gp. i1 59 C and represents a water-white, mobile, light-refracting oil. It has a characteristic odor reminiscent of isovalent and tetrahydrobenzaldehyde.
CH143254D 1929-01-07 1929-01-07 Process for the preparation of a compound with a hydrogenated ring system. CH143254A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143254T 1929-01-07
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143254A true CH143254A (en) 1930-10-31

Family

ID=25713720

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143254D CH143254A (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) CH143254A (en)

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