CH143257A - 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
CH143257A
CH143257A CH143257DA CH143257A CH 143257 A CH143257 A CH 143257A CH 143257D A CH143257D A CH 143257DA CH 143257 A CH143257 A CH 143257A
Authority
CH
Switzerland
Prior art keywords
preparation
compound
ring system
hydrogenated ring
new
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 CH143257A publication Critical patent/CH143257A/en

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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
    • C07C47/453—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings containing six-membered aromatic rings
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

       

      Verfahren    zur Darstellung einer Verbindung mit     hydriertem        Ringsysteiu.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines neuen     Di:          methylphenyl-tetrahydrobenzaldehyds,    wel  ches dadurch gekennzeichnet ist, dass     man     Zimtaldehyd mit 1 . 3 -     Dimethylbutadien          kondensiert.    Die neue Verbindung soll zur  Herstellung von Farbstoffen. pharmazeu  tischen Produkten und Riechstoffen verwen  det     werden.     



       Beispiel:     140 Gewichtsteile Zimtaldehyd werden  mit 200     Volumteilen    1     .3-Dimethvl-butadien     im Druckgefäss vier Stunden lang auf     ?00          C          l-rhltzt.    Das Reaktionsprodukt wird einer       Vakuumdestillation    unterworfen. Nach einem  Vorlauf unveränderter Materialien geht .ein  Rohprodukt bei     gp.        ,zi    149-165   C über.  Nach nochmaliger Destillation im Vakuum    ist: der     Aldehyd    völlig rein und siedet kon  stant bei Kp.     1E    156-l58   C.



      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 di: methylphenyl-tetrahydrobenzaldehyde, wel ches is characterized in that cinnamaldehyde with 1. 3 - dimethylbutadiene condensed. The new compound is said to be used to produce dyes. pharmaceutical products and fragrances are used.



       Example: 140 parts by weight of cinnamaldehyde are heated to -00 ° C for four hours with 200 parts by volume of 1,3-dimethyl-butadiene in a pressure vessel. The reaction product is subjected to vacuum distillation. After a preliminary run of unchanged materials, a raw product goes to gp. , zi 149-165 C about. After another distillation in vacuo: the aldehyde is completely pure and boils constantly at bp 1E 156-158 C.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Di- methylpheny 1-tetrahydrobenzaldehyds, wel ches dadurch gekennzeichnet ist, dass man Zimtaldebyd mit 1 . 3 - Dimethyl - butadien kondensiert. Die neue Verbindung stellt eine Flüssi(Y- heit dar und siedet bei Kp. . 156-158<B>0</B> C. PATENT CLAIM: Process for the preparation of a new dimethylpheny 1-tetrahydrobenzaldehyde, which is characterized in that cinnamaldebyd with 1. 3 - dimethyl - butadiene condensed. The new compound represents a liquid and boils at bp. 156-158 <B> 0 </B> C.
CH143257D 1929-01-21 1929-01-21 Process for the preparation of a compound with a hydrogenated ring system. CH143257A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH143257T 1929-01-21
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143257A true CH143257A (en) 1930-10-31

Family

ID=25713723

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143257D CH143257A (en) 1929-01-21 1929-01-21 Process for the preparation of a compound with a hydrogenated ring system.

Country Status (1)

Country Link
CH (1) CH143257A (en)

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