CH154817A - Process for the preparation of a new conversion product of 1,2-anthraquinone-thioglycol-carboxylic acid. - Google Patents
Process for the preparation of a new conversion product of 1,2-anthraquinone-thioglycol-carboxylic acid.Info
- Publication number
- CH154817A CH154817A CH154817DA CH154817A CH 154817 A CH154817 A CH 154817A CH 154817D A CH154817D A CH 154817DA CH 154817 A CH154817 A CH 154817A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- carboxylic acid
- anthraquinone
- thioglycol
- alkaline solution
- 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
- C09B5/12—Thiophenanthrones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Y erfahren zur Darstellung eines neuen Umwandlungspr oduktes der 1. 2-Anthrachinon- thioglykol-car bonsäur e. Vorliegendes Patent bezieht sieh auf ein Verfahren zur Darstellung eines neuen Um- wandlungsproduktes der 1.2-Anthrachinon- thioglykol-carbonsäure, dadurch gekennzeich- net, dass man eine alkalische Lösung der Anthrachi.non - 1.
2 - thioglykol-mrbonsäure, die man durch Zusatz von Lauge zu einer schwach alkalischen Lösung eines äquimole- kularen Gemisches von Anthrachinon-l-mer- kapto-2-ca.rbo@nsäure und Monochlo@ressigsäure erhält, längere Zeit erhitzt.
Die so verhaltene Carboxythio@phenanthron- 2-carbonsäure löst sich in konzentrierter Schwefelsäure mit gelbstichig roter Farbe; die alkalische Lösung fluoresziert stark grün gelb. Das Säurechlorid der Dicarbonsäure kristallisiert aus Monochlorbenzol in. gelben Kristallen vom Schmelzpunkt 206 bis 212' unter Zersetzung. Die neue Carbonsäure soll als Zwischenprodukt zur Herstellung von Farbstoffen Verwendung finden.
<I>Beispiel:</I> 25 kg Anthrachinon-l-merkapto.-2-ca.rbon- säure (Natriumsalz) werden in 250 Liter Wasser gelöst und bei gewöhnlicher Tem peratur mit einer schwach alkalischen Lö sung von Monochloressigsäure versetzt, die 25 kg Monochlor essigsäure, in 100 Liter Wasser gelöst, enthält.
Nach Zugabe von 55 Liter 30 % iger Natronlauge wird 15 bis 20 Minuten bei 45 gerührt, bis die ursprüng- lieh violette Farbe der Lösung nach Braun umgeschlagen ist. Alsdann wird eine Stunde zum Sieden erhitzt, hierauf filtriert und das Filtrat bei 70 bis 75 angesäuert.
Die ab geschiedene gelbbraune Carboxythiophen- anthron-2,-carbonsäure wird abgesaugt und mit Wasser ausgewaschen. Zwecks Rei- nigung löst man die abgeschiedene Säure nochmals in verdünntem Ammoniakwasser und kocht einige Minuten mit Tierkohle auf und filtriert. Beim Ansäuern des Filtrats scheidet sich die Carboxythiaphenanthron- 2-carbonsäure als goldgelber Niederschlag ab.
Derselbe wird abgesaugt und getrocknet.
Y learn about the presentation of a new conversion product of the 1. 2-anthraquinone thioglycol carboxylic acid. The present patent relates to a process for the preparation of a new conversion product of 1,2-anthraquinone thioglycol carboxylic acid, characterized in that an alkaline solution of anthrachinone non-1.
2 - thioglycolic acid, which is obtained by adding lye to a weakly alkaline solution of an equimolecular mixture of anthraquinone-1-mer-kapto-2-ca.rbo@nsäure and monochlo @ acetic acid, is heated for a long time.
The so restrained Carboxythio @ phenanthrone-2-carboxylic acid dissolves in concentrated sulfuric acid with a yellowish red color; the alkaline solution fluoresces strongly green-yellow. The acid chloride of the dicarboxylic acid crystallizes from monochlorobenzene in yellow crystals with a melting point of 206 to 212 'with decomposition. The new carboxylic acid is said to be used as an intermediate in the production of dyes.
<I> Example: </I> 25 kg of anthraquinone-l-mercapto.-2-carbonic acid (sodium salt) are dissolved in 250 liters of water and a weakly alkaline solution of monochloroacetic acid is added at normal temperature Contains 25 kg of monochloroacetic acid dissolved in 100 liters of water.
After adding 55 liters of 30% strength sodium hydroxide solution, the mixture is stirred for 15 to 20 minutes at 45 until the originally lent violet color of the solution has turned brown. The mixture is then heated to the boil for one hour, then filtered and the filtrate is acidified at 70-75.
The yellow-brown carboxythiophene-anthrone-2-carboxylic acid which has separated out is filtered off with suction and washed out with water. For cleaning, the separated acid is dissolved again in dilute ammonia water and boiled for a few minutes with animal charcoal and filtered. When the filtrate is acidified, the carboxythiaphenanthrone-2-carboxylic acid separates out as a golden yellow precipitate.
The same is suctioned off and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH154817T | 1930-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH154817A true CH154817A (en) | 1932-05-31 |
Family
ID=4409442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH154817D CH154817A (en) | 1930-11-17 | 1930-11-17 | Process for the preparation of a new conversion product of 1,2-anthraquinone-thioglycol-carboxylic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH154817A (en) |
-
1930
- 1930-11-17 CH CH154817D patent/CH154817A/en unknown
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