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.Info
- 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
- Authority
- AT
- Austria
- Prior art keywords
- aminoanthraquinone
- preparation
- diaminoanthraquinone
- benzoyl derivatives
- benzoic acid
- Prior art date
Links
Landscapes
- 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
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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.
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1 Stunden zum Sieden erhitzt. Beim Erkalten kristallisiert das 1-Benzoylaminoanthrachinon direkt aus.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
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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.
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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)
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) |
-
1912
- 1912-06-17 AT AT64801D patent/AT64801B/en active
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