CH182613A - Process for the preparation of an unsymmetrical dye of the thioindigo series. - Google Patents

Process for the preparation of an unsymmetrical dye of the thioindigo series.

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Publication number
CH182613A
CH182613A CH182613DA CH182613A CH 182613 A CH182613 A CH 182613A CH 182613D A CH182613D A CH 182613DA CH 182613 A CH182613 A CH 182613A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
thioindigo series
unsymmetrical dye
unsymmetrical
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 CH182613A publication Critical patent/CH182613A/en

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Description

  

  Verfahren zur Darstellung eines unsymmetrischen Farbstoffes der     Thioindigoreihe.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Darstellung des     6-Methoxy-          6'-äthoxy-thioindigos,dadurch    gekennzeichnet,  dass man     6-zthoxy-3-oxythionaphthen    mit  einem reaktionsfähigen     2-Derivat    des     6-Meth-          oxy    - 2. 3-     diketodihydro    -     thionaphthens    kon  densiert.  



  Der so erhaltene     Farbstoff    ist mit dem  des Hauptpatentes identisch.  



  <I>Beispiel:</I>  31,2 Teile     6-Methoxy-2.3-diketo-dihydro-          thionaphthen-2-(p-dimethyl-amino-ariil)    wer  den mit 19 Teilen     6-Äthoxy-3-oxythionaphthen     und etwa 400 Teilen Chlorbenzol verrührt  und etwa 2 Stunden auf<B>115-1200</B> erhitzt.    Nach Abkühlen wird der     Farbstoff    in üblicher  Weise isoliert.



  Process for the preparation of an unsymmetrical dye of the thioindigo series. The present patent relates to a process for the preparation of 6-methoxy-6'-ethoxy-thioindigo, characterized in that 6-zthoxy-3-oxythionaphthene is mixed with a reactive 2-derivative of 6-methoxy-2. 3- diketodihydro - thionaphthens condenses.



  The dye thus obtained is identical to that of the main patent.



  <I> Example: </I> 31.2 parts of 6-methoxy-2,3-diketo-dihydro-thionaphthen-2- (p-dimethyl-amino-ariil) with 19 parts of 6-ethoxy-3-oxythionaphthen and about 400 parts of chlorobenzene stirred and heated to <B> 115-1200 </B> for about 2 hours. After cooling, the dye is isolated in the usual way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung des 6-Methoxy- 6'-äthoxythioindigos, dadurch gekennzeichnet, dass man 6-Ätboxy-3-oxythionaphthen mit einem reaktionsfähigen 2-Derivat des 6-Meth- oxy-2.3-diketodihydro-thionaphtbens kon densiert. Der so erhaltene Farbstoff ist mit dem des Hauptpatentes identisch. PATENT CLAIM: A process for the preparation of 6-methoxy-6'-ethoxythioindigo, characterized in that 6-ethboxy-3-oxythionaphthene is condensed with a reactive 2-derivative of 6-methoxy-2,3-diketodihydro-thionaphthene. The dye thus obtained is identical to that of the main patent.
CH182613D 1933-08-25 1934-07-26 Process for the preparation of an unsymmetrical dye of the thioindigo series. CH182613A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE182613X 1933-08-25
CH178549T 1934-07-26

Publications (1)

Publication Number Publication Date
CH182613A true CH182613A (en) 1936-02-15

Family

ID=25720180

Family Applications (1)

Application Number Title Priority Date Filing Date
CH182613D CH182613A (en) 1933-08-25 1934-07-26 Process for the preparation of an unsymmetrical dye of the thioindigo series.

Country Status (1)

Country Link
CH (1) CH182613A (en)

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