CH104926A - Process for the production of a thionaphthisatin. - Google Patents
Process for the production of a thionaphthisatin.Info
- Publication number
- CH104926A CH104926A CH104926DA CH104926A CH 104926 A CH104926 A CH 104926A CH 104926D A CH104926D A CH 104926DA CH 104926 A CH104926 A CH 104926A
- Authority
- CH
- Switzerland
- Prior art keywords
- thionaphthisatin
- chloro
- production
- condensation
- parts
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Thionaphtbisatins. Es wurde gefunden, dass man ein neues Thionaplitliisatin, das 5-Chloi#-2 . 1-thionaphth- isatin erhält, wenn man auf 5-Chloc#-2-thio- naphthol Oxalylchlorid, gegebenenfalls unter Zusatz eines Kondensationsmittels, einwirken lässt.
Das 5-Chlor-2.1-thionaphtbisatin bildet ein rotes Pulver, nach einmaligem Umlösen aus Benzol erhält man Kristalle vom Sp. 210 . Beispiel: 194;5 Teile 5-Chlor-2-thionaphthol (farb lose Nadeln vom Sp. 98 ) werden unter Rüh ren bei 0 bis 10 in etwa 600 Teile Oxaly1- chlorid eingetragen und 20 Stunden bei ge wöhnlicher Temperatur gerührt.
Hierauf wird das überschüssige Oxalylchlorid abdestilliert und der Rückstand, nach Zugabe von 1000 Teilen Schwefelkohlenstoff, unter Rühren in nert einer Stunde mit 250 Teilen Aluminium chlorid versetzt, wobei die Temperatur bei 0 bis 10 gehalten wird. Man rührt nun noch längere Zeit bei gewöhnlicher Temperatur, erwärmt dann langsam bis zum Sieden des Schwefelkohlenstoffes und belässt 1 Stunde bei dieser Temperatur. blau trägt dann das Reaktionsprodukt in salzsäurehaltiges Wasser aus.
Nach dem Abtreiben des Schwefelkohlen stoffes wird filtriert und der Rückstand mit verdünnter Sodalösung bei ä0-60 ausge zogen; aus der Sodalösung wird das 5-Chlor- 2. 1-thionaphthisation durch Salzsäure gefällt.
Process for the production of a thionaphthbisatin It has been found that a new thionaplitliisatin, the 5-Chloi # -2. 1-thionaphthisatin is obtained when 5-Chloc # -2-thionaphthol oxalyl chloride is allowed to act, optionally with the addition of a condensing agent.
The 5-chloro-2.1-thionaphtbisatin forms a red powder, after being dissolved once from benzene, crystals of Sp. 210 are obtained. Example: 194; 5 parts of 5-chloro-2-thionaphthol (colorless needles from Sp. 98) are added to about 600 parts of Oxaly1- chloride while stirring at 0 to 10 and stirred for 20 hours at ordinary temperature.
The excess oxalyl chloride is then distilled off and, after the addition of 1000 parts of carbon disulfide, 250 parts of aluminum chloride are added with stirring within one hour, the temperature being kept at 0-10. The mixture is then stirred for a longer time at the usual temperature, then heated slowly until the carbon disulfide boils and left at this temperature for 1 hour. blue then carries out the reaction product in hydrochloric acid-containing water.
After driving off the carbon disulfide, it is filtered and the residue is extracted with dilute soda solution at 0-60; 5-chloro-2. 1-thionaphthization is precipitated from the soda solution with hydrochloric acid.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH104926T | 1922-12-02 | ||
CH102033T | 1922-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH104926A true CH104926A (en) | 1924-05-16 |
Family
ID=25706110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH104926D CH104926A (en) | 1922-12-02 | 1922-12-02 | Process for the production of a thionaphthisatin. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH104926A (en) |
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1922
- 1922-12-02 CH CH104926D patent/CH104926A/en unknown
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