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CH159301A - Process for the preparation of a new condensation product of the anthraquinone series. - Google Patents

Process for the preparation of a new condensation product of the anthraquinone series.

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Publication number
CH159301A
CH159301A CH159301DA CH159301A CH 159301 A CH159301 A CH 159301A CH 159301D A CH159301D A CH 159301DA CH 159301 A CH159301 A CH 159301A
Authority
CH
Switzerland
Prior art keywords
preparation
condensation product
yellow
anthraquinone series
nitrobenzene
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH159301A publication Critical patent/CH159301A/en

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

Description

  

      Terfahren        zur    Darstellung eines neuen     Kondensationsproduktes    der     Antbrachinonreihe.       Das vorliegende Verfahren betrifft die       Darstellung    von     Carbaethoxy-4-methoxyan-          thrapyridon    und ist dadurch     gekennzeichnet,     dass man     1-Amino-4-methoxy-anthrachinon     mit     Malonester    in Gegenwart von Natrium  acetat und Nitrobenzol erhitzt. Die neue Ver  bindung soll zur Darstellung von Farbstoffen  Verwendung finden.  



  <I>Beispiel:</I>  Man erhitzt 20 Teile     1-Amino-4-methoxy-          anthrachinon,    0,5 Teile .     Natriumacetat,    40  Teile     Malonester    und 20 Teile Nitrobenzol  auf 170-185  , bis die Menge des Destillats,  das aus Aceton und Alkohol besteht, nicht  mehr zunimmt.  



  Man erhält das     Carbaethoxy-4-methogy-          anthrapyridon    als gelbe Spiesse und Prismen  vom F. P. 292   C unter Zersetzung. Aus Ni  trobenzol kristallisiert erhält man das     Pyri-          don    als gelbe Spiesse und Prismen vom F. P.    298   C (Zersetzung). Das     Pyridon    löst sich  in Schwefelsäure mit gelber Farbe, welche  auf Zusatz von Borsäure orange wird.



      A method for the presentation of a new condensation product of the antbrachinone series. The present process relates to the preparation of carbaethoxy-4-methoxyanothrapyridone and is characterized in that 1-amino-4-methoxy-anthraquinone is heated with malonic ester in the presence of sodium acetate and nitrobenzene. The new connection is intended to be used to represent dyes.



  <I> Example: </I> 20 parts of 1-amino-4-methoxy-anthraquinone, 0.5 part, are heated. Sodium acetate, 40 parts malonic ester and 20 parts nitrobenzene to 170-185 until the amount of the distillate, which consists of acetone and alcohol, no longer increases.



  The carbaethoxy-4-methogy-anthrapyridone is obtained as yellow skewers and prisms from F. P. 292 C with decomposition. Crystallized from nitrobenzene, the pyridone is obtained as yellow skewers and prisms from F. P. 298 C (decomposition). The pyridone dissolves in sulfuric acid with a yellow color, which turns orange when boric acid is added.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Carb- aethoxy-4-rnetboxyanthrapyridon, dadurch ge kennzeichnet, dass man 1-Amino-4-methoxy- anthrachinon mit Malonester in Gegenwart von Natriumacetat und Nitrobenzol erhitzt. Das Carbaethoxy-4-metboxyanthrapyridon stellt gelbe Spiesse und Prismen vom F. P. <B>2920</B> C (Zersetzung) dar. Aus Nitrobenzol kristallisiert erhält man das Pyridon als gelbe Spiesse und Prismen, die bei<B>2980</B> C unter Zersetzung schmelzen. Das Produkt löst sich in Schwefelsäure mit gelber Farbe, die auf Zusatz von Borsäure orange wird. PATENT CLAIM: Process for the preparation of carbethoxy-4-rnetboxyanthrapyridone, characterized in that 1-amino-4-methoxyanthraquinone is heated with malonic ester in the presence of sodium acetate and nitrobenzene. The carbaethoxy-4-metboxyanthrapyridone represents yellow pikes and prisms from FP <B> 2920 </B> C (decomposition). The pyridone crystallized from nitrobenzene is obtained as yellow pikes and prisms, those at <B> 2980 </B> C melt with decomposition. The product dissolves in sulfuric acid with a yellow color, which turns orange when boric acid is added. Die neue Verbindung soll zur Darstellung von Farbstoffen Verwendung finden. The new compound will be used to represent dyes.
CH159301D 1930-07-18 1931-07-17 Process for the preparation of a new condensation product of the anthraquinone series. CH159301A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159301X 1930-07-18
CH156115T 1931-07-17

Publications (1)

Publication Number Publication Date
CH159301A true CH159301A (en) 1932-12-31

Family

ID=25716684

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159301D CH159301A (en) 1930-07-18 1931-07-17 Process for the preparation of a new condensation product of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH159301A (en)

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