DE614460C - Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin - Google Patents

Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin

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Publication number
DE614460C
DE614460C DEB162686D DEB0162686D DE614460C DE 614460 C DE614460 C DE 614460C DE B162686 D DEB162686 D DE B162686D DE B0162686 D DEB0162686 D DE B0162686D DE 614460 C DE614460 C DE 614460C
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DE
Germany
Prior art keywords
substituted
coumarins
nucleus
pyrone
separation
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
DEB162686D
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German (de)
Inventor
Dr Fritz Voeller
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.)
Roche Diagnostics GmbH
CF Boehringer und Soehne GmbH
Original Assignee
Boehringer Mannheim GmbH
CF Boehringer und Soehne 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 Boehringer Mannheim GmbH, CF Boehringer und Soehne GmbH filed Critical Boehringer Mannheim GmbH
Priority to DEB162686D priority Critical patent/DE614460C/en
Application granted granted Critical
Publication of DE614460C publication Critical patent/DE614460C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/06Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2
    • C07D311/08Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)

Description

Verfahren zur Trennung im Pyronkern substituierter Cumarine von im Benzolkern substituierten Cumarinen und von unsubstituiertem Cumarin Es wurde gefunden, daB die bekannte Anlagerung von Sulfiten und Bisulften an die Doppelbindung im Pyronkern des Cumarins nicht eintritt, wenn die an dieser Düppelbindung (3, q.-Stellung) sitzenden WasserstofF-atome oder auch nur das eine von ihnen substituiert sind. Da anderseits die im Benzolkern substituierten Cumarine ebenso wie das unsubstituiertc Cumarin mit Sulfiten und Bisulfiten wasserlösliche Salze von Sulfons,äuren bilden, aus denen bei der Zerlegung mit Säuren die entsprechenden Cumarine in Freiheit gesetzt werden können, ist es möglich, mittels der Sulfite oder Bisulfte eine einfache Trennung substituierter Cumarine in solche, die im Pyronkern substituiert sind, einerseits und solche, die im Benzolkern substituiert sind, anderseits vorzunehmen. Ganz analog läßt sich natürlich auch eine Trennung der im Pyronkem substituierten Cumarine vom unsubstituierten Cumarin durchführen.Process for the separation of coumarins substituted in the pyrone core from im Benzene nucleus substituted coumarins and unsubstituted coumarin It was found that the well-known addition of sulfites and bisulfites to the double bond in the pyrone core of the coumarin does not occur if those sitting on this chaff bond (3, q.-position) Hydrogen atoms or just one of them are substituted. On the other hand the coumarins substituted in the benzene nucleus as well as the unsubstituted coumarin with sulfites and bisulfites form water-soluble salts of sulfonic acids, from which When decomposing with acids, the corresponding coumarins are set free it is possible to make a simple separation by means of the sulfites or bisulfites substituted coumarins into those that are substituted in the pyrone core, on the one hand and those that are substituted in the benzene nucleus, on the other hand. Quite analog Of course, the coumarins substituted in the pyrone core can also be separated from perform unsubstituted coumarin.

Vorliegendem Verfahren kommt insbesondere für die Gewinnung von Cumarin und Cumarinderivaten wis pflanzlichen Rohstoffen und deren Verarbeitungsprodukten Bedeutung zu.The present process is used in particular for the extraction of coumarin and coumarin derivatives and vegetable raw materials and their processing products Importance to.

Beispiele i. Ein Gemenge von i4,6g Cumarin und 18,89 3-Isapropylcumarin wird mit einer Lösung von etwa 6o g käuflichen Natriumsulfits in ioo ccm Wasser kurze Zeit am Rückflußkühler- zum Sieden erhitzt und dann auf Raumtemperatur abkühlen gelassen, wobei die ölig geschmolzenen Anteile von in Sulfit unlöslichem 3-Isopropylcumarin wieder erstarren, während Cumarin selbst in Lösung gegangen ist. Nach Abfiltrieren vom Isopropylcumarin wird aus dem Filtrat durch Erhitzen mit Schwefelsäure auf etwa 12o bis '3o° das unsubstitulerte Cumarin in Freiheit gesetzt; man erhält auf diese Weise beide Bestandteile des Gemenges in quantitativer Ausbeute.Examples i. A mixture of 14.6g coumarin and 18.89 3-isapropylcoumarin is treated with a solution of about 60 g of commercially available sodium sulfite in 100 cc of water Heated to boiling for a short time on the reflux condenser and then cool to room temperature left, with the oily molten fractions of 3-isopropylcoumarin, which is insoluble in sulfite solidify again while coumarin itself has gone into solution. After filtering off isopropyl coumarin is made from the filtrate by heating with sulfuric acid to about 12o to 3o ° the unsubstituted coumarin set free; one receives on this Way both components of the mixture in quantitative yield.

z. Ein Gemenge von 16g 6-Methylcumarin und 169 3-Methylcumarin wird mit i5occm einer 4.o o/oigen Natriumbiisulfitlösung erhitzt und, wie in Beispiel i beschrieben, weiterbehandelt. Das in Bisulfit unlösliche 3-Methylcumarin wird quantitativ von dein löslichen 6-Methylcumarin getrennt. In gleicher Weise verläuft die Trennung von 4-Methyl- und 6-Methylcumarin. Letzteres geht in Lösung, während das im Pyronring substituierte Derivat ungelöst zurückbleibt. Man erhält beide Bestandteile des Gemenges in quantitativer Ausbeute.z. A mixture of 16g 6-methylcoumarin and 169 3-methylcoumarin is used heated with 15 o / o of a 4 o / o sodium bisulfite solution and, as in example i described, further treated. The 3-methylcoumarin is insoluble in bisulfite quantitatively separated from the soluble 6-methylcoumarin. Proceeds in the same way the separation of 4-methyl- and 6-methylcoumarin. The latter goes into solution while the derivative substituted in the pyrone ring remains undissolved. Both components are obtained of the mixture in quantitative yield.

Ganz wie die alkylierten Produkte lassen sich auch Cumarinderivate mit anderen . Substituenten im Pyronkern, wie z. B. halogensubstituierte Cumarine, mit Sulfit oder Bvsulfit vom Cumärin und im Benzölkern mit Halogen oder anderen Radikalen substituierten Cumarinen trennen, wie folgendes Beispiel zeigt: 3. Ein Gemenge von 7 g 3-Chlorcumarin und 7 g 6-Chlorcumarin wird mit .einer Lösung von 25g kristallisierten Natriumsulfits in 5o ccm Wasser kurze Zeit zum 'Sieden erhitzt. Dann wird abgekühlt und vom ungelösten Anteil, welscher aus 7 g reinem 3-Chlorcumarin besteht, abfiltriert. Das Filtrat wird hierauf mit 5o bis ioog 8o%iger Schwefelsäure so lange verkocht, bis- keine schweflige Säure .mehr entweicht und eine Temperatur von 125 biS i 3 o° erreicht ist. Auf der Lösung hat sich dann das 6-Chlorcumarin in öligen Tropfen abgeschieden, die beim Erkalten erstarren und in einer Ausbeute von 6,39 erhalten werden.Just like the alkylated products, coumarin derivatives can also be mixed with others. Substituents in the pyrone nucleus, such as. B. halogen-substituted coumarins, with sulfite or Bvsulfit from coumarin and in benzoil with halogen or other radicals substituted coumarins separate, as the following example shows: 3. A mixture of 7 g of 3-chlorocoumarin and 7 g of 6-chlorocoumarin is with .einer solution of 25 g of crystallized sodium sulfite in 50 cc of water heated to boiling for a short time. It is then cooled and the undissolved portion, which consists of 7 g of pure 3-chlorocoumarin, is filtered off. The filtrate is then boiled with 50 to 100% sulfuric acid until no more sulfurous acid escapes and a temperature of 125 to 130 ° is reached. The 6-chlorocoumarin has then deposited on the solution in oily drops, which solidify on cooling and are obtained in a yield of 6.39 .

Claims (1)

PATENTANSPRUCH: Verfahren zur Trennung im Pyronkern substituierter Cumarine von im Benzolkern substituierten Cumarinen und von unsubstituiertem Cumarin, dadurch gekennzeichnet, daß man auf die Gemische Sulfite oder Bisulf te zur Einwirkung bringt, von den dabei ungelöst bleibenden, im Pyronkern substituierten Cumarinen abtrennt und die nicht im Pyronkern substituierten Cumarine gegebenenfalls aus den entstandenen Sulfonsäuren auf bekannte Weise in Freiheit setzt.PATENT CLAIM: Process for the separation of substituted in the pyrone core Coumarins of substituted coumarins in the benzene nucleus and of unsubstituted coumarin, characterized in that sulfites or bisulfites are used to act on the mixtures brings, of the remaining undissolved coumarins substituted in the pyrone core separates and the coumarins not substituted in the pyrone nucleus optionally from the resulting sulfonic acids in a known way sets free.
DEB162686D 1933-10-08 1933-10-08 Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin Expired DE614460C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB162686D DE614460C (en) 1933-10-08 1933-10-08 Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB162686D DE614460C (en) 1933-10-08 1933-10-08 Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin

Publications (1)

Publication Number Publication Date
DE614460C true DE614460C (en) 1935-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEB162686D Expired DE614460C (en) 1933-10-08 1933-10-08 Process for the separation of coumarins substituted in the pyrone nucleus from coumarins substituted in the benzene nucleus and from unsubstituted coumarin

Country Status (1)

Country Link
DE (1) DE614460C (en)

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