DE473456C - Process for the preparation of hydrogenation products from benzanthrone - Google Patents

Process for the preparation of hydrogenation products from benzanthrone

Info

Publication number
DE473456C
DE473456C DEC37533D DEC0037533D DE473456C DE 473456 C DE473456 C DE 473456C DE C37533 D DEC37533 D DE C37533D DE C0037533 D DEC0037533 D DE C0037533D DE 473456 C DE473456 C DE 473456C
Authority
DE
Germany
Prior art keywords
benzanthrone
preparation
hydrogen
hydrogenation products
atoms
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEC37533D
Other languages
German (de)
Inventor
Dr Otto Bayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanofi Aventis Deutschland GmbH
Original Assignee
Leopold Cassella et Cie GmbH
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 Leopold Cassella et Cie GmbH filed Critical Leopold Cassella et Cie GmbH
Priority to DEC37533D priority Critical patent/DE473456C/en
Application granted granted Critical
Publication of DE473456C publication Critical patent/DE473456C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B3/00Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02Benzathrones
    • C09B3/06Preparation from starting materials already containing the benzanthrone nucleus

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

Description

Verfahren zur Darstellung von Hydrierungsprodukten aus Benzanthron Zusatz zum Patent q.53 578 In der Patentschrift 453 578 ist ein Verfahren zur Herstellung eines Tetrahydrobenzanthron beschrieben, das darin besteht, diaß Benzanthron bei Gegenwart eines nickelhaltigen Katalysators unter Druck mit der nötigen Menge Wasserstoff behandelt wird.Process for the preparation of hydrogenation products from benzanthrone Addition to patent q.53 578 In the patent specification 453 578 a process for the preparation of a tetrahydrobenzanthrone is described, which consists in treating benzanthrone in the presence of a nickel-containing catalyst under pressure with the necessary amount of hydrogen.

Es wurde nun ferner gefunden, daß bei weiterer Zuführung von Wasserstoff zur Reaktionsmasse bei energischeren Reaktionsbedingungen wasserstoffreichere Benzanthronabkömmlinge erhalten werden, die sich in ihren Eigenschaften von dem erst erhaltenen Tetrahydrobenzanthron charakteristisch unterscheiden und als Ausgangsprodukte für die Herstellung-von Farbstoffen technischen Wert besitzen.It has now also been found that with further addition of hydrogen to the reaction mass under more energetic reaction conditions, hydrogen-rich benzanthrone derivatives obtained, which differ in their properties from the first obtained tetrahydrobenzanthrone distinguish characteristic and as starting products for the manufacture-of Dyes have technical value.

Die überführung von Benzanthron in Kohlenwasserstoff mittels Zinkstaubdestillation bzw. durch Erhitzen mit jodwasserstoffsäure ist zwar bereits bekannt (vgl. Ber.44 [1911l S. 1667 u. ff.). Von diesen nur wissenschaftlichen Zwecken dienenden Reaktionen unterscheidet sich das vorliegende Verfahren sowohl durch seine leichte technische Ausführbarkeit als auch durch die Tatsache, daß ein bisher unbekannter Kohlenwasserstoff von der Formel Cl., H18 erhalten werden kann. Beispiel i ioo kg reines Benzanthron werden, wie im Beispiel des Hauptpatents angegeben ist, zunächst durch Zuführung einer etwa 4 Atomen entsprechenden Menge Wasserstoff bei etwa 12o° tetrahydriert. Sodann wird der Autoklav auf 16o° geheizt und bei 16o bis 2oo° so lange mit Wasserstoff gedrückt, bis die Reaktionsmasse noch eine ungefähr 4 weiteren Atomen entsprechende Menge aufgenommen hat. Das Reaktionsprodukt besteht hauptsächlich aus einer Verbindung von der Formel C,7 H180, die durch fraktionierte Destillation bzw. durch Kristallisation z. B. aus Alkohol in reinem Zustande erhalten werden kann. Die Verbindung, die mit verdünnter Natronlauge eine schwach gelb fluoreszierende Lösung liefert, schmilzt bei 137° und siedet unter 15 mm bei etwa 25o°. o Beispiele -Steigert man bei der in Beispiel z beschriebenen Hydrierung die Temperatur über Zoo ° bzw. läßt man Wasserstoff noch längere Zeit einwirken, so erfolgt noch eine weitere Aufnahme von zwei Wasserstoffatomen und -die Bildung eines Kohlenwasserstoffes von der Formel C" H,_$. Die Trennung von noch vorhandenen, unvollkommen hydrierten Produkten läßt sich durch fraktionierte Destillation sowie durch Herauslösen mit verdünnten Alkalien leicht bewerkstelligen. Der Kohlenwasserstoff wird als ein schwach gelb gefärbtes C51 vom Siedepunkte 228 bis 23o° (z5 mm) gewonnen.The conversion of benzanthrone into hydrocarbons by means of zinc dust distillation or by heating with hydriodic acid is already known (see Ber.44 [1911l p. 1667 and ff.). Of these scientific-only reactions The present process differs both by its light technical nature Feasibility as well as the fact that a previously unknown hydrocarbon of the formula Cl., H18 can be obtained. Example 100 kg of pure benzanthrone are, as indicated in the example of the main patent, initially by supply an amount of hydrogen corresponding to about 4 atoms is tetrahydrated at about 12o °. The autoclave is then heated to 160 ° and at 160 ° to 200 ° with hydrogen for a long time pressed until the reaction mass has another equivalent of about 4 more atoms Amount has absorbed. The reaction product consists mainly of one compound of the formula C, 7 H180, which is obtained by fractional distillation or by crystallization z. B. can be obtained from alcohol in the pure state. The connection made with dilute sodium hydroxide solution provides a weakly yellow fluorescent solution, melts at 137 ° and boils below 15 mm at around 25o °. O Examples - Boosts in the case of the hydrogenation described in example z, the temperature is above Zoo ° or if hydrogen is left to act for a longer period of time, another uptake takes place of two hydrogen atoms and the formation of a hydrocarbon of the formula C "H, _ $. The separation of still existing, imperfectly hydrogenated products leaves by fractional distillation and by dissolving out with dilute alkalis easy to accomplish. The hydrocarbon appears as a pale yellow colored C51 obtained from the boiling point 228 to 23o ° (z5 mm).

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung des durch Patent 453 578 geschützten Verfahrens, dadurch gekennzeichnet, daß Benzanthron bei Gegenwart eines geeigneten Lösungsmittels und unter Zusatz eines nickelhaltigen Kat#lysatörs bei Temperaturen über r5o° unter Druck mit, so viel Wasserstoff behandelt wird, daß mehr als 4 Atome Wasserstoff aufgenommen werden.PATENT CLAIM: Further training of that protected by patent 453 578 Process, characterized in that benzanthrone in the presence of a suitable Solvent and with the addition of a nickel-containing catalyst at temperatures above 50 ° under pressure with so much hydrogen is treated that more than 4 atoms Hydrogen are absorbed.
DEC37533D 1925-12-04 1925-12-04 Process for the preparation of hydrogenation products from benzanthrone Expired DE473456C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC37533D DE473456C (en) 1925-12-04 1925-12-04 Process for the preparation of hydrogenation products from benzanthrone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC37533D DE473456C (en) 1925-12-04 1925-12-04 Process for the preparation of hydrogenation products from benzanthrone

Publications (1)

Publication Number Publication Date
DE473456C true DE473456C (en) 1929-03-15

Family

ID=7022861

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC37533D Expired DE473456C (en) 1925-12-04 1925-12-04 Process for the preparation of hydrogenation products from benzanthrone

Country Status (1)

Country Link
DE (1) DE473456C (en)

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