CH102033A - Process for the production of a thionaphthisatin. - Google Patents
Process for the production of a thionaphthisatin.Info
- Publication number
- CH102033A CH102033A CH102033DA CH102033A CH 102033 A CH102033 A CH 102033A CH 102033D A CH102033D A CH 102033DA CH 102033 A CH102033 A CH 102033A
- Authority
- CH
- Switzerland
- Prior art keywords
- thionaphthisatin
- chloro
- production
- parts
- oxalyl chloride
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/84—Naphthothiazoles
-
- 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
- C09B7/00—Indigoid dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Thionaphthisatins. Teile Oxalylchlorid eingetragen und 20 Stun den bei gewöhnlicher Temperatur gerührt. Hierauf wird das überschüssige Oxalyloblorid abdestilliert und der Rückstand, nach Zugabe von 1000 Teilen Schwefelkohlenstoff, unter Rühren innert einer Stunde mit<B>250</B> Teilen Aluminiumchlorid versetzt, wobei die Tem peratur 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 eine Stunde bei dieser Temperatur. Man trägt dann das Reaktionsprodukt in salzsäure haltiges Wasser aus.
Nach dem Abtreiben des Schwefelkohlenstoffes wird filtriert und der Rückstand mit verdünnter Sodalösung bei 50 bis 60 ausgezogen<B>;</B> aus der Soda lösung wird das 6-Chlor-2. 1-thionaphthisatin durch Salzsäure gefällt. Es wurde gefunden, dass man ein neues Thionaphthisatin, das 6-Chlor-2 .1-thionaph- thisatin erhält, wenn man auf 6-Chlor-2- thionaphthol, gegebenenfalls unter Zusatz eines Kondensationsmittels, Oxalylchlorid ein wirken lässt.
Das 6-Chlor-2.1-thionaphthisatin bildet ein rotes Pulver, nach einmaligem Umlösen aus Benzol erhält man Kristalle vom Fp. 191 . <I>Beispiel 1:</I> 194,5 Teile 6-Chlor-2-thionaphthol (farb lose Nadeln vom Fp. = 156 ) werden unter Rühren bei 0 bis 10 in etwa 600 Teile Oxalylchlorid eingetragen und 20 Stunden bei gewöhnlicher Temperatur gerührt. Hier auf wird das überschüssige Oxalylchlorid ab destilliert und der geschmolzene Rückstand einige Zeit auf 150 bis 180 erhitzt.
Die abgekühlte und erstarrte Schmelze wird zerkleinert und bei<B>500</B> bis<B>600</B> mit Soda lösung ausgezogen. Aus dem Filtrat wird das 6-Chlor-2. 1-thionaphthisatin durch Salz säure gefällt.
<I>Beispiel 2:</I> 194,5 Teile 6-Chlor-2-thionaphthol werden unter Rühren bei 0 bis 10 in etwa 600
Process for the production of a thionaphthisatin. Parts of oxalyl chloride entered and stirred for 20 hours at ordinary temperature. The excess oxalylobloride 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 to 10. The mixture is then stirred for a longer time at the usual temperature, then slowly warmed to the boiling point of the carbon disulfide and left at this temperature for an hour. The reaction product is then discharged into water containing hydrochloric acid.
After the carbon disulfide has been driven off, it is filtered and the residue is extracted with dilute soda solution at 50 to 60. The 6-chloro-2 is extracted from the soda solution. 1-thionaphthisatin precipitated by hydrochloric acid. It has been found that a new thionaphthisatin, the 6-chloro-2 .1-thionaphthisatin, is obtained if oxalyl chloride is allowed to act on 6-chloro-2-thionaphthol, optionally with the addition of a condensing agent.
The 6-chloro-2,1-thionaphthisatin forms a red powder; after redissolving once from benzene, crystals with a melting point of 191 are obtained. <I> Example 1: </I> 194.5 parts of 6-chloro-2-thionaphthol (colorless needles with a melting point of 156) are added to about 600 parts of oxalyl chloride with stirring at 0 to 10 and for 20 hours at ordinary temperature touched. Here the excess oxalyl chloride is distilled off and the melted residue is heated to 150 to 180 for some time.
The cooled and solidified melt is crushed and extracted with soda solution at <B> 500 </B> to <B> 600 </B>. The 6-chloro-2 is obtained from the filtrate. 1-thionaphthisatin precipitated by hydrochloric acid.
<I> Example 2: </I> 194.5 parts of 6-chloro-2-thionaphthol with stirring at 0 to 10 in about 600
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH102033T | 1922-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH102033A true CH102033A (en) | 1924-01-16 |
Family
ID=4360540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH102033D CH102033A (en) | 1922-12-02 | 1922-12-02 | Process for the production of a thionaphthisatin. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH102033A (en) |
-
1922
- 1922-12-02 CH CH102033D patent/CH102033A/en unknown
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