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.

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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
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH145897A publication Critical patent/CH145897A/en

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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)

PATENTANSPRUCH: Verfahren zur Darstellung von 5.7-Di chlor-(2)-thionaphten-4'-methyl-5'-chlor-7'-me- thoxy-(2')-indolindigo, dadurchgekennzeichnet, dass man 5.7-Dichlor-3-oxy-thionaphten in Gegenwart eines indifferenten organischen Lösungsmittels mit einem reaktionsfähigen a-Derivat des 4-Methyl-5-chlot@-7-methoxy-isa- tins kondensiert. PATENT CLAIM: Process for the preparation of 5.7-dichloro- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') - indolindigo, characterized in that 5.7-dichloro-3 -oxy-thionaphthene condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-methyl-5-chlorot @ -7-methoxy-isatin. Der gebildete Farbstoff löst sich in wasser freier Schwefelsäure mit grünblauer Farbe, in heissem Nitrobenzol mit leuchtendblauer Farbe, Baumwolle und Wolle werden aus der alkalischen Hydrosulfitküpe in neinblauen Tönen angefärbt. Die Färbungen sind grüner als die des nach dem Verfahren des Haupt patentes erhaltenen Farbstoffes. LTNTRRA'-\rSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Chlorbenzol vornimmt. The dyestuff formed dissolves in anhydrous sulfuric acid with a green-blue color, in hot nitrobenzene with a bright blue color, cotton and wool are dyed from the alkaline hydrosulphite vat in light blue shades. The colors are greener than those of the dye obtained by the process of the main patent. LTNTRRA '- \ rSPRUCH: Process according to patent claim, characterized in that the condensation is carried out in chlorobenzene.
CH145897D 1928-04-07 1929-04-04 Process for the preparation of 5.7-dichloro- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indolindigo. CH145897A (en)

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)

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