CH143238A - 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.

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Publication number
CH143238A
CH143238A CH143238DA CH143238A CH 143238 A CH143238 A CH 143238A CH 143238D A CH143238D A CH 143238DA CH 143238 A CH143238 A CH 143238A
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 CH143238A publication Critical patent/CH143238A/en

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

Description

  

  Verfahren     zur    Darstellung einer Verbindung     finit    hydriertem Ringsystem.    Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines neuen     hydro-          aromatischen        o-Dicarbonsäure-anhydrids,    wel  ches dadurch gekennzeichnet ist, dass man       Maleinsäureanhydrid    mit     Styrylfulven    kon  densiert. Die neue Verbindung soll zur Her  stellung von     Farbstoffen,    pharmazeutischen  Produkten und Riechstoffen verwendet werden.

    <I>Beispiel:</I>  <B>180</B> Gewichtsteile     Styrylfulven    und 98  Gewichtsteile     Maleinsäureanhydrid    werden in  Benzol gelöst und einige Zeit zum Siedet)  erhitzt. Nach dem     Abdunaten    des Benzols  und     Umkristallisieren    aus Essigester erhält  man farblose Kristalle vom     Schmelzpunkt       <B>137</B> bis<B>138</B>  . Das neue Produkt ist durch  Zusammenlagerung je eines Moleküls der Aus  gangsmaterialien entstanden.



  Process for the preparation of a compound finite hydrogenated ring system. The subject of this additional patent is a process for the preparation of a new hydro-aromatic o-dicarboxylic acid anhydride, which is characterized in that maleic anhydride is condensed with styrylfulvene. The new compound is to be used for the manufacture of dyes, pharmaceutical products and fragrances.

    <I> Example: </I> <B> 180 </B> parts by weight of styrylfulvene and 98 parts by weight of maleic anhydride are dissolved in benzene and heated to the boil for some time. After the benzene has been removed and recrystallization from ethyl acetate, colorless crystals with a melting point of <B> 137 </B> to <B> 138 </B> are obtained. The new product was created by assembling one molecule of each of the starting materials.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen hydroaromatischen o-Dicarbonaät)re-anhydrids, dadurch gekennzeichnet, dass man Styrylful- ven mit Maleinsäureanhydrid kondensiert. Das neue Produkt aus Essigester umkristal lisiert, bildet farblose Kristalle vom Schmelz punkt<B>137</B> bis<B>138</B> . Das neue Produkt ist durch Zusammenlagerung je eines Moleküls der Ausgangsmaterialien entstanden. PATENT CLAIM: Process for the preparation of a new hydroaromatic o-dicarbonate) re-anhydride, characterized in that styryl fulvene is condensed with maleic anhydride. The new product made of ethyl acetate recrystallizes and forms colorless crystals with a melting point of <B> 137 </B> to <B> 138 </B>. The new product was created by assembling one molecule of the starting materials.
CH143238D 1927-11-05 1928-11-02 Process for the preparation of a compound with a hydrogenated ring system. CH143238A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE143238X 1927-11-05
CH141523T 1930-08-15

Publications (1)

Publication Number Publication Date
CH143238A true CH143238A (en) 1930-10-31

Family

ID=25713759

Family Applications (1)

Application Number Title Priority Date Filing Date
CH143238D CH143238A (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) CH143238A (en)

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