CH136554A - Process for the preparation of a descendant of the pyrazolanthrone. - Google Patents
Process for the preparation of a descendant of the pyrazolanthrone.Info
- Publication number
- CH136554A CH136554A CH136554DA CH136554A CH 136554 A CH136554 A CH 136554A CH 136554D A CH136554D A CH 136554DA CH 136554 A CH136554 A CH 136554A
- Authority
- CH
- Switzerland
- Prior art keywords
- pyrazolanthrone
- preparation
- phenylbenzanthrone
- potash
- descendant
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/02—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position
- C09B5/04—Pyrazolanthrones
- C09B5/06—Benzanthronyl-pyrazolanthrone condensation products
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
Description
Verfahren zur Darstellung eines Abkömtnlinges des Pyrazolanthrons. Der Gegenstand der vorliegenden Erfin dung ist ein Verfahren zur Darstellung eines Bä-1-(Bz-2-Phenylbenzarithronyl)-Py-l-pyra- zolanthrons der Formel
EMI0001.0005
durch Aufeinandereinwirkenlassen von Bz-1- Halogen-Bz-2-phenylbenzanthron, Pyrazolan- thron und Pottasche. Das Produkt findet für die Darstellung von Küpenfarbstoffen Ver wendung.
Beispiel: Zu einer aus 66 Gewichtsteilen Py ra- zolanthron und 66 Gewichtsteilen Pottasche durch Erhitzen in 750 Gewichtsteilen Nitro- benzol hergestellten Paste von Pyrazolanthron- kali -werden 103 Gewichtsteile Bz-1-Chlor- Bz-2-phenylbenzanthron vom Schmelzpunkt 248 C zugegeben und etwa 8-10 Stunden lang bei Siedetemperatur verrührt. Nach dem Erkalten wird filtriert und mit Nitrobenzol, Alkohol und Wasser gewaschen und ge trocknet.
Das so gewonnene Bz-2-Phenyl- uer)zanthronyl-pyrazolai)thron bildet ein gelbes Kristallpulver, das aus sehr viel Pyridin um kristallisiert werden kann. Im reinen Zustande schmilzt es bei 328-330 C und löst sich in konzentrierter Schwefelsäure mit gelbstichig- roter Farbe ohne Fluoreszenz.
Process for the preparation of a derivative of the pyrazolanthrone. The subject of the present invention is a process for the preparation of a Bä-1- (Bz-2-phenylbenzarithronyl) -Py-l-pyrazolanthrone of the formula
EMI0001.0005
by allowing Bz-1-halogen-Bz-2-phenylbenzanthrone, pyrazolanthrone and potash to act on one another. The product is used for the representation of vat dyes.
Example: 103 parts by weight of Bz-1-chloro-Bz-2-phenylbenzanthrone with a melting point of 248 ° C. are added to a paste of pyrazole anthrone kali made from 66 parts by weight of pyrazolanthrone and 66 parts by weight of potash by heating in 750 parts by weight of nitrobenzene Stirred for about 8-10 hours at boiling temperature. After cooling, it is filtered and washed with nitrobenzene, alcohol and water and dried.
The Bz-2-phenyl uer) zanthronyl pyrazolai) thron thus obtained forms a yellow crystal powder which can be crystallized from a great deal of pyridine. In the pure state it melts at 328-330 ° C. and dissolves in concentrated sulfuric acid with a yellowish-red color without fluorescence.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH136554T | 1927-10-22 | ||
CH133473T | 1927-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH136554A true CH136554A (en) | 1929-11-15 |
Family
ID=25712066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH136554D CH136554A (en) | 1927-10-22 | 1927-10-22 | Process for the preparation of a descendant of the pyrazolanthrone. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH136554A (en) |
-
1927
- 1927-10-22 CH CH136554D patent/CH136554A/en unknown
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