AT71166B - Process for the preparation of 4-halogeno- and 4-alkyl-1-oxyanthraquinones and their substitution products. - Google Patents
Process for the preparation of 4-halogeno- and 4-alkyl-1-oxyanthraquinones and their substitution products.Info
- Publication number
- AT71166B AT71166B AT71166DA AT71166B AT 71166 B AT71166 B AT 71166B AT 71166D A AT71166D A AT 71166DA AT 71166 B AT71166 B AT 71166B
- Authority
- AT
- Austria
- Prior art keywords
- substitution products
- alkyl
- oxyanthraquinones
- preparation
- halogeno
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<Desc/Clms Page number 1>
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benzoesäure. Das 4-Chlor-3-methyl-1-oxyanthrachinon bildet gelbe Nadeln vom Schmelzpunkt 17zoo. Es löst sich gut in siedendem Alkohol und Benzol.
EMI2.2
mählich unter Rühren eingetragen, worauf man zur Beendigung der Reaktion, die fast quantitativ verläuft, auf 120 erhitzt. Die braune Masse wird in bekannter Weise nach Zusatz von Wasser und Salzsäure mit Dampf behandelt. Der Rückstand wird in Soda. gelöst, wobei geringe Mengen 4-Methyl-l-oxyanthrachinon zurückbleiben. Die aus der Lösung,
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4-Methyl-1-oxyanthrachinonkondensieren.
An Stelle der genannton Phenolderivate können auch andere, wie z. B. 4-Brom- phenol, 2-Chlor-4-oxy-1-methylbenzol, Verwendung finden. Das Phtalsäureanhydrid kann durch seine Substitutionsprodukte ersetzt worden, ebenso wie auch die Reaktion sowohl ohne als auch unter Zusatz von geeigneten Verdünnungsmittel ausgeführt werden kann.
PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung von 4-Halogen-l-oxyanthrachinonen und ihren Substitutionsprodukten, darin bestehend, dass man Phtalsäureanhydrid oder seine Substitutionsprodukte mit 4-Halogenphenolen oder deren Substitutionsprodukten mittels Aluminiumchlorid kondensiert und die hiebei gebildeten 5-Halogen-2-oxybenzoylbenzoesäuren durch Einwirkung von Kondensationsmitteln, wie Schwefelsäure oder Aluminiumchlorid in die entsprechenden Anthrachinonderivate überführt.
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benzoic acid. The 4-chloro-3-methyl-1-oxyanthraquinone forms yellow needles with a melting point of 17,000. It dissolves well in boiling alcohol and benzene.
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added gradually with stirring, whereupon the reaction, which is almost quantitative, is ended by heating to 120. The brown mass is treated with steam in a known manner after adding water and hydrochloric acid. The residue is in soda. dissolved, with small amounts of 4-methyl-l-oxyanthraquinone remaining. Those out of the solution
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Condense 4-methyl-1-oxyanthraquinone.
Instead of the phenol derivatives mentioned, others, such as. B. 4-bromophenol, 2-chloro-4-oxy-1-methylbenzene, find use. The phthalic anhydride can be replaced by its substitution products, and the reaction can also be carried out with or without the addition of suitable diluents.
PATENT CLAIMS:
1. A process for the preparation of 4-halo-l-oxyanthraquinones and their substitution products, consisting in condensing phthalic anhydride or its substitution products with 4-halophenols or their substitution products using aluminum chloride and the 5-halo-2-oxybenzoylbenzoic acids formed by the action of Condensation agents such as sulfuric acid or aluminum chloride converted into the corresponding anthraquinone derivatives.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE71166X | 1913-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT71166B true AT71166B (en) | 1916-02-10 |
Family
ID=5635698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT71166D AT71166B (en) | 1913-11-20 | 1914-06-13 | Process for the preparation of 4-halogeno- and 4-alkyl-1-oxyanthraquinones and their substitution products. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT71166B (en) |
-
1914
- 1914-06-13 AT AT71166D patent/AT71166B/en active
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