DE472825C - Process for the preparation of anthracene derivatives - Google Patents

Process for the preparation of anthracene derivatives

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Publication number
DE472825C
DE472825C DEF60058D DEF0060058D DE472825C DE 472825 C DE472825 C DE 472825C DE F60058 D DEF60058 D DE F60058D DE F0060058 D DEF0060058 D DE F0060058D DE 472825 C DE472825 C DE 472825C
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Germany
Prior art keywords
preparation
anthracene derivatives
derivatives
catalyst
reports
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DEF60058D
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German (de)
Inventor
Dr Wilhelm Eckert
Dr Georg Kraenzlein
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Priority to DEF60058D priority Critical patent/DE472825C/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/20Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
    • C07C1/22Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by reduction
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00Systems containing at least three condensed rings
    • C07C2603/02Ortho- or ortho- and peri-condensed systems
    • C07C2603/04Ortho- or ortho- and peri-condensed systems containing three rings
    • C07C2603/22Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
    • C07C2603/24Anthracenes; Hydrogenated anthracenes
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00Systems containing at least three condensed rings
    • C07C2603/02Ortho- or ortho- and peri-condensed systems
    • C07C2603/40Ortho- or ortho- and peri-condensed systems containing four condensed rings
    • C07C2603/42Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Darstellung von Anthracenderivaten Für die Darstellung von Anthracenderivaten durch Reduktion der leichter zugänglichen Anthrachinonderivate kommen im wesentlichen folgende Verfahren in Betracht.Process for the preparation of anthracene derivatives For the preparation of anthracene derivatives by reducing the more easily accessible anthraquinone derivatives The following processes essentially come into consideration.

i. Zinkstaubdestillation nach S a e y e r.i. Zinc dust distillation according to S a e y e r.

2. Einwirkung von Jodwasserstoff und rotem Phosphor bei Temperaturen von i 2o bis 22o° (vgl. Berichte d. d. chem. Ges., Bd. 15 [i882], S.:224, Bd. 36 [19o3], S. 34,I3).2. Influence of hydrogen iodide and red phosphorus at temperatures from 120 to 22o ° (cf. reports dd chem. Ges., Vol. 15 [1882], pp: 224, Vol. 36 [19o3], p. 34, I3 ).

3. Reduktion mit Zinkstaub und Alkali. Diese Verfahren haben sich teils wegen unvorteilhaft hohen Temperaturen, teils wegen großer Kostspieligkeit und mäßigen Ausbeuten in der Technik nicht eingebürgert.3. Reduction with zinc dust and alkali. These procedures have become partly because of the disadvantageously high temperatures, partly because of the high cost and moderate yields are not naturalized in technology.

Es ist nun gefunden worden, daß man Anthracenderivate vorteilhaft in der Weise darstellen kann, daß man die Anthrachinonderivate bei Gegenwart von Wasserstoff über einen Katalysator oder ein Gemisch von Katalysatoren hinweg sublimiert. Die-Reaktionstemperaturen richten sich nach der Art des Katalysators und des Anthrachinonderivates. Bei der Anwendung eines Kupferkatalysators z. B. liegt der günstige Temperaturbereich bei den verschiedensten Anthrachinonderivaten zwischen 325 bis 475'.It has now been found that anthracene derivatives are advantageous can represent in such a way that the anthraquinone derivatives in the presence of Hydrogen sublimes over a catalyst or mixture of catalysts. The reaction temperatures depend on the type of catalyst and the anthraquinone derivative. When using a copper catalyst, for. B. is the favorable temperature range for the most varied of anthraquinone derivatives between 325 and 475 '.

Dies ist überraschend, denn die katalytische Reduktion des Anthrachinons und seiner Abkömmlinge führt bei Temperaturen von 2oo° und darunter (vgl. schweizerische Patentschrift i 2o 799) zum Anthranol und seinen Derivaten, und nach den Arbeiten von S a -b a t i e r und Senderens (vgl. Comptes rendus 136, S. 738, 92,1, 983), P f a f f und B r u n c k (Berichte 56 [r923], S. 2q.63), von I p a t i e w und K 1 j u k w i n (Berichte 58 [r925], S. i) und Z e 1 i n s k i und K u -m a r e w s k i (Berichte 57 [i924], S. 667) war zu erwarten, daß bei weiterer Temperatursteigerung über die zuletzt angegebenen Grenzen hinaus einheitliche Reaktionsprodukte nicht mehr zu erhalten sind, da unter diesen Bedingungen Hydrierung, Dehydrierung und Aufspaltungsreaktionen neben anderen verlaufen. Das vorliegende Verfahren hat den Vorzug, daß man zu technisch reinen Anthracenderivaten gelangt. Beispiele i. In einer etwa il/, m langen Röhre wird 2-Aminoanthrachinon, das zweckmäßig mit etwas Kupfer oder Zinkstaub gemischt ist, im Wasserstoffstrom bei etwa 46o bis q.75° langsam über ein Katalysatorengemisch aus Kupfer und Zink sublimiert. Im kühl gehaltenen Ausgang des Rohres schlägt sich das von L i e b e r m a n n (vgl. Liebigs Annalen der Chemie, Bd.212, S.58/59) beschriebene 2-Aminoanthracen in gelbgrünen Kristallen nieder; es schmilzt nach einmaligem Umlösen bei etwa 235'. 2. In der vorstehend beschriebenen Einrichtung wird aus i-Aminoanthrachinon bei 325 bis 335° das zwischen 120 und 1300 schmelzende i-Aminoanthracen erhalten. Das Produkt besitzt die von D i e n e 1 beschriebenen Eigenschaften (vgl. Berichte d. d. chem. Ges., Bd.38 [igo5], S.2865).This is surprising, because the catalytic reduction of anthraquinone and its derivatives leads to anthranol and its derivatives at temperatures of 200 ° and below (cf. Swiss patent specification i 2o 799), and according to the work of S a -batier and Senderens (cf. Comptes rendus 136, pp. 738, 92,1, 983), Pfaff and B runck (reports 56 [r923], p. 2q.63), by I patie w and K 1 jukwin (reports 58 [r925], p i) and Z e 1 inski and K u -m arewski (Reports 57 [1924], p. 667) it was to be expected that if the temperature was further increased beyond the limits given above, uniform reaction products would no longer be obtained, since under these Conditions hydrogenation, dehydrogenation and cleavage reactions among others proceed. The present process has the advantage that technically pure anthracene derivatives are obtained. Examples i. In a tube about half an inch long, 2-aminoanthraquinone, which is expediently mixed with a little copper or zinc dust, is slowly sublimed in a stream of hydrogen at about 46 ° to about 75 ° over a catalyst mixture of copper and zinc. In the outlet of the pipe, which is kept cool, the 2-aminoanthracene described by L iebermann (cf. Liebigs Annalen der Chemie, Vol. 212, pp. 58/59) precipitates in yellow-green crystals; it melts at about 235 'after being dissolved once. 2. In the device described above, the i-aminoanthracene which melts between 120 and 1300 is obtained from i-aminoanthraquinone at 325 to 335 °. The product has the properties described by D iene 1 (cf. reports dd chem. Ges., Vol.38 [igo5], p.2865).

3. In analoger Weise entsteht aus 2-Methylaminoanthrachinon bei 400° und Verwendung von Kupferkatalysator das bisher nicht beschriebene 2-Methylaminoanthracen, das, umkristallisiert, grüne Blättchen darstellt, die sich in organischen Lösungsmitteln mit stark grüner Fluoreszenz lösen. Die Lösungsfarbe in Schwefelsäure ist grün, der Schmelzpunkt liegt bei 22o bis 2210.3. In an analogous manner, 2-methylaminoanthraquinone is formed at 400 ° and use of copper catalyst, the previously not described 2-methylaminoanthracene, which, recrystallized, represents green flakes that are in organic solvents dissolve with strong green fluorescence. The solution color in sulfuric acid is green, the melting point is between 22o and 2210.

4. i-Diäthylaminoanthrachinon ;ergibt, : bei 325° reduziert, das noch nicht bekannte i-Diäthylaminoanthracen. Der Schmelzpunkt dieser Verbindung liegt bei etwa 200°, seine Lösungsfarbe in Schwefelsäure ist grün.4. i-Diethylaminoanthraquinone; gives,: reduced at 325 °, that still unknown i-diethylaminoanthracene. The melting point of this compound is at about 200 °, its solution color in sulfuric acid is green.

5. Aus 2, 6-Dimethoxyanthrachinon entsteht in der oben angegebenen Apparatur bei 375° das 2, 6-Dimethoxyanthracen vom Schmelzpunkt 255 bis 256°. Es stimmt .in seinen Eigenschaften mit den von P e r k i n (vgl. Journalof Chem. Soc., Bd. 123, S. 2o23)' angegebenen überein.5. The 2,6-dimethoxyanthracene with a melting point of 255 to 256 ° is formed from 2,6-dimethoxyanthraquinone in the apparatus specified above at 375 °. Its properties agree with those stated by Perkin (cf. Journalof Chem. Soc., Vol. 123, p. 2023).

6. Verwendet man als Ausgangsstoff 2-Methylanthrachinon und reduziert bei 46o bis 475°, so entsteht das bei 19g0 schmelzende 2-Methylanthracen.6. If you use 2-methylanthraquinone as the starting material and reduce at 46o to 475 °, 2-methylanthracene, which melts at 19g0, is formed.

7. In gleicher Weise läßt sich bei einer Röhrentemperatur von 425' Benzanthron in das von S c h o 1 1 (Berichte d. d. chem. Ges., Bd. 44 [igii], S. T667) beschriebene Benzanthren überführen. Es schmilzt bei 82 bis 8 0 47. In the same way, at a tube temperature of 425 ', benzanthrone can be converted into the benzanthrone described by S cho 11 (reports dd chem. Ges., Vol. 44 [igii], p. T667). It melts at 82 to 8 0 4

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Anthracenderivaten, dadurch gekennzeichnet, daß man die entsprechenden Anthrachinonderivate bei erhöhten Temperaturen (über 300°) in Gegenwart eines Katalysators oder eines Katalysatorengemisches mit Wasserstoff oder ähnlichen, reduzierend wirkenden Gasen behandelt.PATENT CLAIM: Process for the preparation of anthracene derivatives, characterized in that the corresponding anthraquinone derivatives are increased Temperatures (over 300 °) in the presence of a catalyst or a catalyst mixture treated with hydrogen or similar reducing gases.
DEF60058D 1925-10-17 1925-10-18 Process for the preparation of anthracene derivatives Expired DE472825C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF60058D DE472825C (en) 1925-10-17 1925-10-18 Process for the preparation of anthracene derivatives

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE623224X 1925-10-17
DEF60058D DE472825C (en) 1925-10-17 1925-10-18 Process for the preparation of anthracene derivatives

Publications (1)

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DE472825C true DE472825C (en) 1929-03-06

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