AT96974B - Process for the preparation of perylene. - Google Patents

Process for the preparation of perylene.

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Publication number
AT96974B
AT96974B AT96974DA AT96974B AT 96974 B AT96974 B AT 96974B AT 96974D A AT96974D A AT 96974DA AT 96974 B AT96974 B AT 96974B
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AT
Austria
Prior art keywords
perylene
preparation
dioxyperylene
desc
warning
Prior art date
Application number
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German (de)
Inventor
Hans Pereira
Original Assignee
Hans Pereira
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Filing date
Publication date
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Publication of AT96974B publication Critical patent/AT96974B/en

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

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Perylen. 
 EMI1.1 
 



   Die   Darstel1ungsweisen   von Perylen benötigen entweder kostspielige Ausgangsmaterialien oder liefern nur ganz ungenügende Ausbeute (Ber., 43 (1910), S. 2202 ; Ber. 46 (1913), S. 1994). Bei den bessere Ausbeuten liefernden Verfahren von Hausgirg und Zinke (Mon. f. Ch.", 40 (1919), S. 403) bedarf man kostspieliger und die Arbeitsweise erschwerende Phosphorverbindungen. 



   Es wurde nun gefunden, dass man durch pyrogene Reduktion von Dioxyperylen, wie es z. B. nach der Patent-Nr. 96973 erhalten werden kann, glatt Perylen erhält. Die pyrogene Reduktion erfolgt am besten durch Destillation des Dioxyperylens über Zinkstaub, kann jedoch auch auf andere Weise, wie z. B. durch direktes Erhitzen von Dioxyperylen mit Zinkstaub oder Eisenpulver, bewirkt werdenDas so erhaltene Perylen kann als Ausgangsmaterial für die Darstellung von in der Färberei und Pharmacie brauchbaren Derivaten Verwendung finden. 



   Beispiel   l : l   Teil Dioxyperylen wird mit 2 Teilen Zinkstaub verrieben und im Wasserstoffstrom über erhitztem Zinkbimsstein destilliert. Das in Form eines rotgelben, bald   erstarrend ! n Öles   überdestillierende Perylen kann durch Kristallisation aus den bekannten Mitteln rein erhalten werden. Es besitzt dann alle Eigenschaften des in der Literatur als Perylen beschriebenen Kohlenwasserstoffes. 



  Auch durch   Umfällen   aus Toluol oder Eisessig kann das erhaltene Perylen gereinigt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of perylene.
 EMI1.1
 



   The ways of preparing perylene either require expensive starting materials or give only an entirely inadequate yield (Ber., 43 (1910), p. 2202; Ber. 46 (1913), p. 1994). The processes by Hausgirg and Zinke (Mon. f. Ch. ", 40 (1919), p. 403), which give better yields, require more expensive phosphorus compounds which make the procedure more difficult.



   It has now been found that by pyrogenic reduction of dioxyperyls, as it is, for. B. according to the patent no. 96973 can be obtained, smooth perylene is obtained. The pyrogenic reduction is best done by distilling the dioxyperylene over zinc dust, but can also be done in other ways, such as. The perylene obtained in this way can be used as a starting material for the preparation of derivatives which can be used in dyeing and pharmaceuticals.



   Example 1: 1 part of dioxyperylene is triturated with 2 parts of zinc dust and distilled in a stream of hydrogen over heated zinc pumice stone. That in the form of a red-yellow, soon freezing! The perylene which distills over oil can be obtained pure by crystallization from the known agents. It then has all the properties of the hydrocarbon described in the literature as perylene.



  The perylene obtained can also be purified by reprecipitation from toluene or glacial acetic acid.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRÜCHE : 1. Verfahren zur Darstellung von Perylen, dadurch gekennzeichnet, dass man Dioxyperylen der pyrogenen Reduktion unterwirft.' 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Dioxyperylen über Zink im Wasserstoffstrom destilliert wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIMS: 1. A process for the preparation of perylene, characterized in that dioxyperylene is subjected to pyrogenic reduction. 2. The method according to claim 1, characterized in that dioxyperylene is distilled over zinc in a hydrogen stream. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT96974D 1920-07-02 1920-07-02 Process for the preparation of perylene. AT96974B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT96974T 1920-07-02

Publications (1)

Publication Number Publication Date
AT96974B true AT96974B (en) 1924-05-26

Family

ID=3616459

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96974D AT96974B (en) 1920-07-02 1920-07-02 Process for the preparation of perylene.

Country Status (1)

Country Link
AT (1) AT96974B (en)

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