AT64801B - Process for the preparation of benzoyl derivatives of 1- and 2-aminoanthraquinone and 1.4-, 1.5- and 1.8-diaminoanthraquinone. - Google Patents

Process for the preparation of benzoyl derivatives of 1- and 2-aminoanthraquinone and 1.4-, 1.5- and 1.8-diaminoanthraquinone.

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Publication number
AT64801B
AT64801B AT64801DA AT64801B AT 64801 B AT64801 B AT 64801B AT 64801D A AT64801D A AT 64801DA AT 64801 B AT64801 B AT 64801B
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AT
Austria
Prior art keywords
aminoanthraquinone
preparation
diaminoanthraquinone
benzoyl derivatives
benzoic acid
Prior art date
Application number
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German (de)
Original Assignee
Wedekind & Co Mit Beschraenkte
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 Wedekind & Co Mit Beschraenkte filed Critical Wedekind & Co Mit Beschraenkte
Application granted granted Critical
Publication of AT64801B publication Critical patent/AT64801B/en

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

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Benzoylderivaten von 1- und 2-Aminoanthrachinon sowie
1. 4-, 1. 5- und 1.   8-Diaminoanthrachinon.   



   Das   Benzoyiieren   von   A. n1inoantbrachinonen   mit Benzoylchlorid ohne Anwendung eines   Lösungsmittels führt sieht   zum Ziele. Bei den bis jetzt bekannten Verfahren wird entweder mit Benzoylchlorid oder mit Benzoesäure, unter Zusatz von Phosphorpentachlorid, Phosphoroxychlorid,   Chlorzink   und anderen wasserentziebenden Mitteln, jedoch stets in Gegenwart eines Lösungsmittels (Xylol, Nitrobenzol) gearbeitet. Es wurde nun die technisch sehr wichtige Beobachtung gemacht, dass 1- und 2-Aminoanthrachinon, 1.4-, 1.5- und 1.8-Diamino- 
 EMI1.1 
 mitteln in   Benzoylderivate   überführen lassen. Dieses Verhalten ist durchaus überraschend. 



  Man müsste erwarten, dass das sich bei der Reaktion abspaltende Wasser bei der hohen Temperatur von etwa 2500 sofort auf die gebildete Benzoylverbindung wiederspaltend wirken würde. Der Eintritt der Benzoylgruppe beim Erhitzen mit Benzoesäure allein ist ausserdem 
 EMI1.2 
   Benzoesäure   in Gegenwart eines Lösungsmittels (Nitrobenzol 207 , Naphtalin 218 ) zu keinem Resultate führten. Das Verfahren   gestaltet sich äusserst einfach.

   Man braucht   nur das Amin mit überschüssiger Benzoesäure solange zum bieden zu erhitzen, bis die Reaktion zu Ende ist. dann das Bezoylderivat durch Herauslösen der   Hfnzoesiiure   durch   Sodalösung oder durch   Abtreiben der Benzoesäure durch Sodalösung   oder durch Herauslösen   der   benzoesäure mit   Wasserdampf zu isolieren. 
 EMI1.3 
   1   Stunden zum Sieden erhitzt. Beim Erkalten kristallisiert das 1-Benzoylaminoanthrachinon direkt aus. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of benzoyl derivatives of 1- and 2-aminoanthraquinone as well as
1-4, 1-5 and 1.8-diaminoanthraquinone.



   The benzoylation of A. n1inoantbrachinonen with benzoyl chloride without the use of a solvent leads to the goal. In the processes known up to now, either benzoyl chloride or benzoic acid is used with the addition of phosphorus pentachloride, phosphorus oxychloride, zinc chloride and other dehydrating agents, but always in the presence of a solvent (xylene, nitrobenzene). The technically very important observation has now been made that 1- and 2-aminoanthraquinone, 1.4-, 1.5- and 1.8-diamino
 EMI1.1
 can be converted into benzoyl derivatives. This behavior is quite surprising.



  One would have to expect that the water that is split off during the reaction would immediately have a re-splitting effect on the benzoyl compound formed at the high temperature of around 2500. The entry of the benzoyl group on heating with benzoic acid alone is also
 EMI1.2
   Benzoic acid in the presence of a solvent (nitrobenzene 207, naphthalene 218) did not lead to any results. The process is extremely simple.

   You only need to heat the amine to the boil with excess benzoic acid until the reaction is over. then isolate the bezoyl derivative by dissolving the benzoic acid with soda solution or by stripping off the benzoic acid with soda solution or by dissolving the benzoic acid with steam.
 EMI1.3
   Heated to the boil for 1 hour. On cooling, the 1-benzoylaminoanthraquinone crystallizes out directly.

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

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung der Benzoylderivate von 1-und 2-Aminoanthrachinon, 1.4-, 1.5- und 1.8-Diaminoanthrachinonen, dadurch gekennzeichnet, dass man die Amine mit Benzoesäure allein ohne Zusatz von Lösungs- oder Kondensationsmitteln erhitzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of the benzoyl derivatives of 1- and 2-aminoanthraquinone, 1.4-, 1.5- and 1.8-diaminoanthraquinones, characterized in that the amines are heated with benzoic acid alone without the addition of solvents or condensing agents. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT64801D 1911-06-21 1912-06-17 Process for the preparation of benzoyl derivatives of 1- and 2-aminoanthraquinone and 1.4-, 1.5- and 1.8-diaminoanthraquinone. AT64801B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE64801X 1911-06-21

Publications (1)

Publication Number Publication Date
AT64801B true AT64801B (en) 1914-05-11

Family

ID=32875847

Family Applications (1)

Application Number Title Priority Date Filing Date
AT64801D AT64801B (en) 1911-06-21 1912-06-17 Process for the preparation of benzoyl derivatives of 1- and 2-aminoanthraquinone and 1.4-, 1.5- and 1.8-diaminoanthraquinone.

Country Status (1)

Country Link
AT (1) AT64801B (en)

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