CH147703A - Process for the preparation of a derivative of 3.4.8.9-dibenzpyrene-5.10-quinone. - Google Patents
Process for the preparation of a derivative of 3.4.8.9-dibenzpyrene-5.10-quinone.Info
- Publication number
- CH147703A CH147703A CH147703DA CH147703A CH 147703 A CH147703 A CH 147703A CH 147703D A CH147703D A CH 147703DA CH 147703 A CH147703 A CH 147703A
- Authority
- CH
- Switzerland
- Prior art keywords
- quinone
- dibenzpyrene
- derivative
- preparation
- mol
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Derivates des 3.4.8.9-Dibenzpyren-5.10-chinons. Im Hauptpatent ist ein Verfahren zur Darstellung eines Derivates des 3.4.8.9- Dibenzpyren-5.10-chinons beschrieben, bei dem 1 Mol. 3.4. 8.9-Dibenzpyren 5 . 10 chinon in saurem Medium in Gegenwart von Katalysatoren mit mindestens 1 Mol. eines chlorierend wirkenden Mittels behandelt wird.
Es wurde nun gefunden, dass man einen wertvollen ähnlichen Küpenfarbstoff der Dibenzpyrenchinonreihe erhalten kann, wenn man 1 Mol. 3.4.8.9-Dibenzpyren-5.10- chinon in saurer Lösung in Abwesenheit von Überträgern mit mindestens 1/2 Mol. eines bromierend wirkenden Mittels behandelt.
Der erhaltene Farbstoff, ein Monobrom- 3. 4. 8. 9-dibenzpyren-5 . 10-chinon, löst sich in konzentrierter Schwefelsäure mit violet ter Farbe, liefert eine rote Küpe und färbt Baumwolle in klaren, kräftigen, goldgelben Tönen. <I>Beispiel 1:</I> 33,2 Teile 3. 4. 8. 9-I)ibenzpy ren-5 . 10- chinon werden in 300 Teilen 12 % igem Oleum gelöst und nach Zugabe von 8,8 Teilen Brom unter Rühren langsam auf 60-70 C er hitzt.
Wenn alles Brom aufgenommen ist, lässt man erkalten und arbeitet wie üblich auf. <I>Beispiel 2:</I> 16,6 Teile reines 3. 4. 8. 9-Dibenzpy reri- 5.10-chinon werden in 200 Teilen Chlor- sulfonsäure gelöst und nach Zugabe von 16 Teilen Brom langsam auf 95 bis<B>100'</B> C er hitzt. Sobald eine entnommene Probe sich violett in Schwefelsäure löst, lässt man er kalten und arbeitet wie üblich auf.
Process for the preparation of a derivative of 3.4.8.9-dibenzpyrene-5.10-quinone. The main patent describes a process for the preparation of a derivative of 3.4.8.9-dibenzpyrene-5.10-quinone in which 1 mol. 3.4. 8.9-dibenzpyrene 5. 10 quinone is treated in an acidic medium in the presence of catalysts with at least 1 mole of a chlorinating agent.
It has now been found that a valuable similar vat dye of the dibenzpyrenquinone series can be obtained if 1 mol. 3.4.8.9-Dibenzpyren-5.10-quinone is treated in acidic solution in the absence of carriers with at least 1/2 mol. Of a brominating agent.
The dye obtained, a monobromo-3, 4, 8, 9-dibenzpyrene-5. 10-quinone, dissolves in concentrated sulfuric acid with a violet color, supplies a red vat and dyes cotton in clear, strong, golden-yellow tones. <I> Example 1: </I> 33.2 parts 3. 4. 8. 9-I) ibenzpy ren-5. 10-quinone are dissolved in 300 parts of 12% oleum and, after the addition of 8.8 parts of bromine, slowly heated to 60-70 ° C. with stirring.
When all the bromine has been absorbed, let it cool down and work up as usual. <I> Example 2: </I> 16.6 parts of pure 3. 4. 8. 9-Dibenzpy reri- 5.10-quinone are dissolved in 200 parts of chlorosulphonic acid and, after addition of 16 parts of bromine, slowly to 95 to <B > 100 '</B> C it heats. As soon as a sample taken dissolves violet in sulfuric acid, it is left cold and worked up as usual.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE147703X | 1929-03-26 | ||
CH143710T | 1929-06-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH147703A true CH147703A (en) | 1931-06-15 |
Family
ID=25714338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH147703D CH147703A (en) | 1929-03-26 | 1930-02-11 | Process for the preparation of a derivative of 3.4.8.9-dibenzpyrene-5.10-quinone. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH147703A (en) |
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1930
- 1930-02-11 CH CH147703D patent/CH147703A/en unknown
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