CH145897A - Process for the preparation of 5.7-dichloro- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indolindigo. - Google Patents
Process for the preparation of 5.7-dichloro- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indolindigo.Info
- Publication number
- CH145897A CH145897A CH145897DA CH145897A CH 145897 A CH145897 A CH 145897A CH 145897D A CH145897D A CH 145897DA CH 145897 A CH145897 A CH 145897A
- Authority
- CH
- Switzerland
- Prior art keywords
- dichloro
- methoxy
- methyl
- chloro
- indolindigo
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung von 5.7-Dichlor-(2)-thionapliten-4'-metlisl-5'-eliIor- 7'-methoxy-(2')-indolindigo. Gegenstand dieses Patentes ist ein Ver fahren zur Darstellung von 5.7-Dichlor-(2) thionaphten-4'-methyl-5'-chlor-7'-methoxy-(2')- indolindigo, welches dadurch gekennzeichnet ist, dass man 5.7-Dichlor-3-oxy-thionaphten in Gegenwart eines indifferenten organischen Lösungsmittels mit einem reaktionsfähigen a-Derivat des 4-Methyl-5-chlor-7-methoxy-isä- tins kondensiert.
<I>Beispiel:</I> 22 Gewichtsteile 5. 7-Dichlor-3-oxy-l-thio- naphten werden in<B>180</B> Gewichtsteilen Chlor benzol kochend gelöst und filtriert. Die fil trierte Lösung wird bei 40-50' C in eine Lösung von 4-Methyl-5-chlor-7-methoxy-isatin- a-chlorid, hergestellt aus 22,6 Gewichtsteilen dieses Isatinderivates und 24 Gewichtsteilen Phosphorpentachlorid in 200 Teilen Chlor benzol, eingerührt. Nach kurzem Kochen ist die Kondensation beendet. Der ausgeschiedene Farbstoff wird abgesaugt, mit Chlorbenzol und Sprit gewaschen.
In wasserfreier Schwe felsäure löst er sich mit grünblauer, in heilem Nitrobenzol mit leuchtendblauer Farbe. Baum wolle und Wolle werden aus der alkalischen Ilydrosulfitküpe in reinblauen Tönen ange färbt. Die Färbungen sind grüner als die des nach dem Verfahren des Hauptpatentes erhaltenen Farbstoffes.
Process for the preparation of 5.7-dichloro- (2) -thionapliten-4'-metlisl-5'-eliIor-7'-methoxy- (2 ') -indolindigo. The subject of this patent is a process for the preparation of 5.7-dichloro (2) thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') - indolindigo, which is characterized in that one 5.7- Dichloro-3-oxy-thionaphthene condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-methyl-5-chloro-7-methoxy-isaten.
<I> Example: </I> 22 parts by weight of 5. 7-dichloro-3-oxy-1-thio-naphthene are dissolved at the boil in 180 parts by weight of chlorobenzene and filtered. The fil trated solution is at 40-50 'C in a solution of 4-methyl-5-chloro-7-methoxy-isatin-a-chloride, prepared from 22.6 parts by weight of this isatin derivative and 24 parts by weight of phosphorus pentachloride in 200 parts of chlorine benzene , stirred in. After a short boil, the condensation has ended. The precipitated dye is filtered off with suction, washed with chlorobenzene and fuel.
In anhydrous sulfuric acid it dissolves with green-blue color, in healthy nitrobenzene with a bright blue color. Cotton and wool are dyed in pure blue tones from the alkaline Ilydrosulfitküpe. The colorations are greener than those of the dye obtained by the process of the main patent.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE145897X | 1928-04-07 | ||
CH143034T | 1929-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH145897A true CH145897A (en) | 1931-03-15 |
Family
ID=25714214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH145897D CH145897A (en) | 1928-04-07 | 1929-04-04 | Process for the preparation of 5.7-dichloro- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indolindigo. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH145897A (en) |
-
1929
- 1929-04-04 CH CH145897D patent/CH145897A/en unknown
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