CH146445A - Process for the preparation of 5.7-dibromo- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indole-indigo. - Google Patents

Process for the preparation of 5.7-dibromo- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indole-indigo.

Info

Publication number
CH146445A
CH146445A CH146445DA CH146445A CH 146445 A CH146445 A CH 146445A CH 146445D A CH146445D A CH 146445DA CH 146445 A CH146445 A CH 146445A
Authority
CH
Switzerland
Prior art keywords
dibromo
methoxy
chloro
indigo
preparation
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 CH146445A publication Critical patent/CH146445A/en

Links

Landscapes

  • Indole Compounds (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung von     i;.7-Dibrom-(2)-thionapliten-4'-inetliyl-5'-clilor-7'-          methogy-(2')-indol-indigo.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung von     5.7-Dibrom-(2)-          thioriaphten-4'    -     methyl    - 5' -chlor - 7' -     methoxy-          (2')-indol-iridigo,    welches dadurch gekennzeich  net ist, dass man 5.

       7-Dibrom-3-oxy-thionaph-          ten    in     Gegenwart    eines     indifferenten    organi  schen Lösungsmittels mit einem reaktions  fälligen a -Derivat des 4 -     hlethyl-5-chlor-7-          methoxy-isatins    kondensiert.         Beispiel:       30,8 Gewichtsteile 5 . 7     -Dibrom-3-oxy-1-          thionapliten    werden in 180     Gewichtsteilen     Chlorbenzol kochend gelöst und filtriert.

   Die  filtrierte Lösung wird bei 40-50   C in eine  Lösung von     4-Methyl-5-ohlor-7-inethoxy-isatin-          a-chlorid,    hergestellt aus 22,6     Gewichtsteilen     dieses     Isatinderivates    wie im Hauptpatent  angegeben, eingerührt. Nach kurzem Kochen  ist die Kondensation beendet. Der ausgeschie  dene Farbstoff wird abgesaugt, mit Chlor-    Benzol und Sprit gewaschen.     -In    konzentrier  ter Schwefelsäure löst er sich reit grünblauer  Farbe, in heissem Nitrobenzol mit leuchtend  blauer Farbe. Baumwolle und Wolle werden  aus der alkalischen     Hydrosulfitküpe    in rein  blauen Tönen angefärbt.

   Die Färbungen sind  noch etwas klarer und grüner als die des  nach dem     Verfahren    des Zusatzpatentes  Nr.<B>145897</B>     erbaltPnen    Farbstoffes.



  Process for the preparation of i; .7-dibromo- (2) -thionapliten-4'-inetliyl-5'-clilor-7'-methogy- (2 ') -indole-indigo. The subject of this patent is a process for the representation of 5.7-dibromo (2) - thioriaphten-4 '- methyl - 5' -chlor - 7 '- methoxy- (2') - indole-iridigo, which is characterized by that one 5.

       7-Dibromo-3-oxy-thionaph- ten condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-methyl-5-chloro-7-methoxy-isatin. Example: 30.8 parts by weight 5. 7-Dibromo-3-oxy-1-thionaplites are dissolved at the boil in 180 parts by weight of chlorobenzene and filtered.

   The filtered solution is stirred into a solution of 4-methyl-5-chloro-7-ynethoxy-isatin-a-chloride, prepared from 22.6 parts by weight of this isatin derivative as indicated in the main patent, at 40-50 ° C. After a short boil, the condensation has ended. The excreted dye is filtered off with suction, washed with chloro-benzene and fuel. -It dissolves in concentrated sulfuric acid with a green-blue color, in hot nitrobenzene with a bright blue color. Cotton and wool are dyed in pure blue shades from the alkaline hydrosulfite vat.

   The colors are a little clearer and greener than those of the dye obtained by the process of additional patent no. <B> 145897 </B>.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 5.7-Di- brom - (2) - thionaphten - 4'- rnethy 1- 5'-clilor- 7' methoxy-(2')-iudol-indigo, dadurch gekenn zeichnet, dass mau 5.7-Dibrom-3-oxythioriaph- ten in Gegenwart eines indifferenten organi schen Lösungsmittels mit einem reaktionsfä higen a-Derivat des 4-11Iethyl-5-chlor-7- methoxy-isatins kondensiert. PATENT CLAIM: Process for the preparation of 5.7-dibromo- (2) -thionaphten- 4'- rnethy 1- 5'-clilor- 7 'methoxy- (2') - iudol-indigo, characterized in that mau 5.7- Dibromo-3-oxythioriaph- th condensed in the presence of an inert organic solvent with a reactive α-derivative of 4-11Iethyl-5-chloro-7-methoxy-isatin. Der so erhaltene Farbstoff löst sich in wasserfreier Schwefelsäure finit grünblauer Farbe, in heissem Nitrobenzol mit leuchtend blauer Farbe. Baumwolle und Wolle werden aus der alkalischen Hydrosulfitküpe in nein blauen Tönen angefärbt. Die Färbungen sind noch etwas klarer und grüner als die des nach dem Verfahren des Zusatzpatentes Nr. 145897 erhaltenen Farbstoffes. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation in Chlorbenzol vornimmt. The dye thus obtained dissolves in anhydrous sulfuric acid finitely green-blue in color, in hot nitrobenzene with a bright blue color. Cotton and wool are dyed in no blue tones from the alkaline hydrosulfite vat. The colorations are a little clearer and greener than those of the dye obtained by the process of additional patent no. 145897. SUBCLAIM: Process according to claim, characterized in that the condensation is carried out in chlorobenzene.
CH146445D 1928-04-07 1929-04-04 Process for the preparation of 5.7-dibromo- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indole-indigo. CH146445A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE146445X 1928-04-07
CH143034T 1929-04-04

Publications (1)

Publication Number Publication Date
CH146445A true CH146445A (en) 1931-04-15

Family

ID=25714219

Family Applications (1)

Application Number Title Priority Date Filing Date
CH146445D CH146445A (en) 1928-04-07 1929-04-04 Process for the preparation of 5.7-dibromo- (2) -thionaphten-4'-methyl-5'-chloro-7'-methoxy- (2 ') -indole-indigo.

Country Status (1)

Country Link
CH (1) CH146445A (en)

Similar Documents

Publication Publication Date Title
CH146445A (en) Process for the preparation of 5.7-dibromo- (2) -thionaphten-4&#39;-methyl-5&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indole-indigo.
CH146446A (en) Process for the preparation of 5-bromo- (2) -thionaphten-4&#39;-methyl-5&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indole-indigo.
CH145897A (en) Process for the preparation of 5.7-dichloro- (2) -thionaphten-4&#39;-methyl-5&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indolindigo.
DE518951C (en) Process for the preparation of purple indigoid dyes
AT33317B (en) Process for the preparation of mono- and dibromo derivatives of indigo.
DE494949C (en) Process for the production of Kuepen dyes
DE525331C (en) Process for the production of new Kuepen dyes
DE582169C (en) Process for the preparation of Kuepen dyes
DE451549C (en) Process for the preparation of green-coloring, sulphurous cow dyes
DE469343C (en) Process for the preparation of indigoid dyes
CH186852A (en) Process for the preparation of an indigoid dye of the pyrene series.
CH148693A (en) Process for the preparation of a vat dye.
CH146443A (en) Process for the preparation of 4,7-dimethyl-5-chloro- (2) -thionaphten-4&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indole-indigo.
CH146860A (en) Process for the preparation of a condensation product of the pyrazole anthrone series.
CH123457A (en) Process for the preparation of a vat dye from 4-methyl-5. 6-dichloro-3-oxy-1-thionaphtene.
CH145893A (en) Process for the preparation of 5.6.7-trichloro- (2) -thionaphten-4&#39;-methyl-5&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indole-indigo.
CH138877A (en) Process for the preparation of a vat dye.
CH232300A (en) Process for the production of a vat dye.
CH134106A (en) Process for the preparation of a new nitrogen-containing vat dye.
CH182611A (en) Process for the preparation of a condensation product of a carbenium compound.
CH204134A (en) Process for the production of a vat dye.
CH123686A (en) Process for the preparation of a vat dye of the thioindigo series.
CH146188A (en) Process for the preparation of a vat dye.
CH146444A (en) Process for the preparation of 5.6.7-trichloro- (2) -thionaphten-4&#39;-chloro-7&#39;-methoxy- (2 &#39;) -indole-indigo.
CH148687A (en) Process for the preparation of a vat dye.