CH146443A - Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphten-4'-chloro-7'-methoxy- (2 ') -indole-indigo. - Google Patents

Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphten-4'-chloro-7'-methoxy- (2 ') -indole-indigo.

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Publication number
CH146443A
CH146443A CH146443DA CH146443A CH 146443 A CH146443 A CH 146443A CH 146443D A CH146443D A CH 146443DA CH 146443 A CH146443 A CH 146443A
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CH
Switzerland
Prior art keywords
chloro
methoxy
dimethyl
indigo
indole
Prior art date
Application number
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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 CH146443A publication Critical patent/CH146443A/en

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Description

  

  Verfahren zur Darstellung von     4.7-Dimethyl-5-chlor-(2)-thionaphten-          4'-chlor-7'-methoxy-(2')-indol-indigo.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung von     4.7-Dimethyl-5-          chlor-(2)-thionaphten-4'-chlor-7'-methoxy-    (2')     -          indol-indigo,    welches dadurch gekennzeichnet  ist, dass man     4.7-Dimethyl-5-chlor-3-oxy-          thionaphten    in Gegenwart eines indifferenten  organischen Lösungsmittels mit einem reak  tionsfähigen     a-Derivat    des     4-Chlor-7-methoxy-          isatins    kondensiert.  



  <I>Beispiel:</I>  Man bereitet eine Lösung von     4-Chlor-7-          methoxy-isatin-a-chlorid    und kondensiert die  ses mit 21 Gewichtsteilen     4,7-Dimethyl-5-chlor-          3-oxy-thionaphteri,    gelöst in 200 Teilen Chlor  benzol in der üblichen Weise. Der so erhaltene       Farbstoff    ist ein     violettblaues    Pulver, das  sich in konzentrierter Schwefelsäure mit blau  grüner Farbe löst. Die Faser wird aus gel  ber     Küpe    in röter blauen Tönen angefärbt,  als durch den Farbstoff des Zusatzpatentes  Nr. 145895.



  Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphthene-4'-chloro-7'-methoxy- (2 ') -indole-indigo. The subject of this patent is a process for the preparation of 4,7-dimethyl-5-chloro (2) -thionaphten-4'-chloro-7'-methoxy- (2 ') - indole-indigo, which is characterized in that one 4,7-Dimethyl-5-chloro-3-oxy-thionaphthene condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-chloro-7-methoxy isatin.



  <I> Example: </I> A solution of 4-chloro-7-methoxy-isatin-a-chloride is prepared and this is condensed with 21 parts by weight of 4,7-dimethyl-5-chloro-3-oxy-thionaphteri, dissolved in 200 parts of chlorobenzene in the usual way. The dye thus obtained is a violet-blue powder that dissolves in concentrated sulfuric acid with a blue-green color. The fiber is dyed from a yellow vat in reddish blue tones than by the dye of the additional patent no.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 4.7-Dime- thyl-5-cblor-(2)-thionaphten-4'-chlor- V-meth- oxy-(2')-indol-indigo, dadurch gekennzeichnet, dass man 4.7-Dimethyl-5-chlor-3-oxy-thionapli- ten in Gegenwart eines indifferenten orgat)i- schen Lösungsmittels mit einem reaktions fähigen a-Derivat des 4-Chlor-7-methoxy- isatins kondensiert. PATENT CLAIM: Process for the preparation of 4,7-dimethyl-5-cblor- (2) -thionaphten-4'-chloro-V-methoxy- (2 ') -indole-indigo, characterized in that 4.7-dimethyl -5-chloro-3-oxy-thionapli- th condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-chloro-7-methoxy-isatin. Der so erhaltene Farbstoff ist ein violett blaues Pulver, das sich in konzentrierter Schwefelsäure mit blaugrüner Farbe löst. Die Faser wird aus geller Küpe in röter blauen Tönen gefärbt, als durch den Farbstoff des Zusatzpatentes Nr. 145895. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Chlorbenzol vornimmt. The dye thus obtained is a violet-blue powder which dissolves in concentrated sulfuric acid with a blue-green color. The fiber is dyed from a geller vat in reddish blue tones than by the dye of the additional patent no.
CH146443D 1928-04-07 1929-04-04 Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphten-4'-chloro-7'-methoxy- (2 ') -indole-indigo. CH146443A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE146443X 1928-04-07
CH143034T 1929-04-04

Publications (1)

Publication Number Publication Date
CH146443A true CH146443A (en) 1931-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH146443D CH146443A (en) 1928-04-07 1929-04-04 Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphten-4'-chloro-7'-methoxy- (2 ') -indole-indigo.

Country Status (1)

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CH (1) CH146443A (en)

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