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CH159310A - 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
CH159310A
CH159310A CH159310DA CH159310A CH 159310 A CH159310 A CH 159310A CH 159310D A CH159310D A CH 159310DA CH 159310 A CH159310 A CH 159310A
Authority
CH
Switzerland
Prior art keywords
preparation
condensation product
anthraquinone series
new condensation
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 CH159310A publication Critical patent/CH159310A/en

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

Description

  

  Verfahren zur Darstellung eines neuen Kondensationsproduktes  der     Anthraehinonr        eihe.       Das vorliegende Verfahren betrifft die  Darstellung von     Acetyl-4        methoxyarrthrapy-          ridon    und ist dadurch     gekennzeichnet,    dass  man     1-Amino-4-methoxy-anthrachinon    mit       Acetessigester    in Gegenwart von Natrium  acetat und     Nitrobenzol    erhitzt.  



  Die neue Verbindung soll zur Darstellung  von Farbstoffen Verwendung finden.  <I>Beispiel,:</I>  Man erhitzt 20 Teile     1-Amino-4-methoxy-          anthracbinon,    0,5 Teile     Natriumacetat,    40  Teile     Acetessigester    und 20 Teile Nitrobenzol  auf 170-185  , bis die Menge des Destillats,  das aus Aceton und Alkohol besteht, nicht  mehr zunimmt. Das Produkt ist das     Acetyl-4-          methoxyanthrapyridon    vom F. P. 316       (Zers.),     aus     Nitrobenzol    gelbe Spiesse vom F.

   P.<B>317'</B>       (Zers.).    Das Produkt löst sich in Schwefel-    säure mit gelber Farbe, welche auf Zusatz  von Borsäure ziegelrot wird.



  Process for the preparation of a new condensation product of the anthraehinone series. The present process relates to the preparation of acetyl-4-methoxyarrthrapyridone and is characterized in that 1-amino-4-methoxy-anthraquinone is heated with acetoacetic ester in the presence of sodium acetate and nitrobenzene.



  The new compound will be used to represent dyes. <I> Example,: </I> 20 parts of 1-amino-4-methoxy-anthracbinone, 0.5 parts of sodium acetate, 40 parts of acetoacetic ester and 20 parts of nitrobenzene are heated to 170-185 until the amount of distillate that comes out Acetone and alcohol exist, no longer increases. The product is acetyl-4-methoxyanthrapyridone from F. P. 316 (decomp.), Yellow skewers made from nitrobenzene from F.

   P. <B> 317 '</B> (decomp.). The product dissolves in sulfuric acid with a yellow color, which turns brick-red when boric acid is added.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Acetyl-4- methoxyanthrapyridon, dadurch gekennzeich net, dass man 1-Arrrino-4-methoxyantlrra- chinon mit Acetessigester in Gegenwart von Natriumacetat und Nitrobenzol erhitzt. Das Acetyl - 4 - methoxyanthrapyridon schmilzt bei 316 , wobei es sich zersetzt. Aus Nitrobenzol kristallisiert es in gelben Spiessen vom Schmelzpunkt 317 (unter Zer setzung). Das Produkt löst sich in Schwefel säure mit gelber Farbe, welche auf Zusatz von Borsäure ziegelrot wird. PATENT CLAIM: Process for the preparation of acetyl-4-methoxyanthrapyridone, characterized in that 1-arrrino-4-methoxyantlrraquinone is heated with acetoacetate in the presence of sodium acetate and nitrobenzene. The acetyl - 4 - methoxyanthrapyridone melts at 316, where it decomposes. From nitrobenzene it crystallizes in yellow skewers with a melting point of 317 (with decomposition). The product dissolves in sulfuric acid with a yellow color, which turns brick-red when boric acid is added. Die neue Verbindung soll zur Darstellung von Farbstoffen Verwendung finden. The new compound will be used to represent dyes.
CH159310D 1930-07-18 1931-07-17 Process for the preparation of a new condensation product of the anthraquinone series. CH159310A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159310X 1930-07-18
CH156115T 1931-07-17

Publications (1)

Publication Number Publication Date
CH159310A true CH159310A (en) 1932-12-31

Family

ID=25716693

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159310D CH159310A (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) CH159310A (en)

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