CH143214A - 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
CH143214A
CH143214A CH143214DA CH143214A CH 143214 A CH143214 A CH 143214A CH 143214D A CH143214D A CH 143214DA CH 143214 A CH143214 A CH 143214A
Authority
CH
Switzerland
Prior art keywords
compound
preparation
ring system
hydrogenated ring
melting point
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 CH143214A publication Critical patent/CH143214A/en

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

Description

  

  Verfahren zur Darstellung einer Verbindung mit hydriertem Ringsystem.    Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung einer Verbindung  von folgender     Konstitution:     
EMI0001.0002     
    das dadurch gekennzeichnet ist, dass man       Akrolein    mit     Cyclopentadien    kondensiert.  Die neue Verbindung soll zur Herstellung  von     Farbstoffen,    pharmazeutischen Produk  ten und Riechstoffen verwendet werden.  



  <I>Beispiel:</I>  10 Gewichtsteile     Akrolein,    gelöst in  15 Gewichtsteilen Äther, werden mit 14 Ge  wichtsteilen     Cyclopentadien    versetzt. Es tritt  Reaktion     unter    Erwärmung ein. Nach be  endigten Umsetzung     wird    das Produkt     irsi          C02-Strom    im Vakuum fraktioniert. Siede-    Punkt 70 bis<B>72'</B> (620 mm). Der so er  haltene Aldehyd bildet ein farbloses, licht  brechendes Öl von charakteristischem, an       Valeraldehyd    erinnerndem, äusserst anhaften  dem Geruch.

   Er bildet eine     gut    kristallisie  rende     Bisulfitverbindung,    ein     Semicarbazon          (Schmp.        16O')    und ein gut kristallisieren  des     Kondensationsprodukt    mit     Cyclohexanon          (Schmp.    104 bis 105  ).



  Process for the preparation of a compound with a hydrogenated ring system. The subject of this additional patent is a process for the production of a compound with the following constitution:
EMI0001.0002
    which is characterized in that acrolein is condensed with cyclopentadiene. The new compound is intended to be used in the manufacture of dyes, pharmaceutical prod ucts and fragrances.



  <I> Example: </I> 10 parts by weight of acrolein, dissolved in 15 parts by weight of ether, are mixed with 14 parts by weight of cyclopentadiene. A reaction occurs with heating. After the reaction has ended, the product is fractionated in a stream of CO 2 in vacuo. Boiling point 70 to <B> 72 '</B> (620 mm). The aldehyde obtained in this way forms a colorless, light-refracting oil with a characteristic odor that is reminiscent of valeraldehyde and is extremely adhesive.

   It forms a bisulfite compound which crystallizes well, a semicarbazone (melting point 16O ') and the condensation product crystallizes well with cyclohexanone (melting point 104 to 105).

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Verbin dung von folgender Konstitution: EMI0001.0023 dadurch gekennzeichnet, dass man Akrolein mit Cyclopentadien kondensiert. Der so er haltene Aldehyd bildet ein farbloses, licht- brechendes 01 von. . charakteristischem, an Valeraldehyd erinnernden, äusserst anhaf tendem Geruch. PATENT CLAIM: Method for representing a compound of the following constitution: EMI0001.0023 characterized in that acrolein is condensed with cyclopentadiene. The aldehyde obtained in this way forms a colorless, light-refracting 01 of. . characteristic, extremely clinging odor reminiscent of valeraldehyde. Er bildet eine gut kristalli sierende Bisulfitverbindung, ein Semicarbazon (Schmp. <B>160')</B> und ein gut kristallisieren- des Kondensationsprodukt mit Cycloheganon (Schmp. 104 bis<B>105').</B> It forms a bisulfite compound which crystallizes well, a semicarbazone (melting point 160 ') and a condensation product with cycloheganone which crystallizes well (melting point 104 to 105'). </B>
CH143214D 1927-11-05 1928-11-02 Process for the preparation of a compound with a hydrogenated ring system. CH143214A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143214X 1927-11-05
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143214A true CH143214A (en) 1930-10-31

Family

ID=25713735

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143214D CH143214A (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) CH143214A (en)

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