CH153691A - Process for the preparation of 3-methyl-4-methoxy-6-chloro-1-aminobenzene-2-sulfonic acid. - Google Patents

Process for the preparation of 3-methyl-4-methoxy-6-chloro-1-aminobenzene-2-sulfonic acid.

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Publication number
CH153691A
CH153691A CH153691DA CH153691A CH 153691 A CH153691 A CH 153691A CH 153691D A CH153691D A CH 153691DA CH 153691 A CH153691 A CH 153691A
Authority
CH
Switzerland
Prior art keywords
methyl
methoxy
preparation
acid
sulfonic acid
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 CH153691A publication Critical patent/CH153691A/en

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Description

  

  Verfahren zur Darstellung von     3-Nethyl-4:-methoxy-6-eblor-l-amino-beiizol-2-stilfosäure.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     3-Methyl-4-          methoxy-6-chlor-l-amino-benzol-2-sulfosäure,     welches dadurch gekennzeichnet ist,     dass    man       3-methyl        -4-methoxy-6-chlor-l-amino-beiizol     mit molekularen Mengen     Halogensulfonsäure,     !n Gegenwart eines Verdünnungsmittels und  unter     Ausschluss    von jeglicher Feuchtigkeit,  behandelt. Die so erhaltene neue     Sulfosäure     soll Verwendung finden zur Darstellung von  Farbstoffen.  



  <I>Beispiel:</I>  <B>171,5</B>     Gewichtsteile        S-Methyl-4-methoxy-          6-chlor-l-amino-bejizol    werden in zirka<B>700</B>       Gewichtsteilen        Tetrachlorkohlenstoff    gelöst.

    Dazu tropfen unter kräftigem Rühren und  guter Kühlung<B>116,5</B>     Gewichtsteile        Chlorsul-          fonsäure.    Man rührt einige Zeit nach, ersetzt  den     abdestillierten        Tetrachlorkohlenstoff    durch  technisches-     Chlortoluol'    und erhitzt langsam       auf   <B>160-1700 C.</B> Apparatur und sonstige    Arbeitsbedingungen sind dieselben, wie im  Beispiel des     Ilauptpatentes    angegeben.  



  Die     3-Methyl-4-metboxy-6-ohlor-l-amino-          beiizol-2-sulfosäure    stellt nach dem Absaugen  und Trocknen ein  farbloses Pulver dar,  welches als     Natronsalz    aus Wasser um  kristallisiert werden kann und eine in Was  ser schwer lösliche     Diazoverbindung    ergibt.



  Process for the preparation of 3-methyl-4: -methoxy-6-eblor-1-amino-beiizol-2-stilfonic acid. The subject of this additional patent is a process for the preparation of 3-methyl-4-methoxy-6-chloro-1-aminobenzene-2-sulfonic acid, which is characterized in that 3-methyl -4-methoxy-6-chloro l-amino-beiizole with molecular amounts of halosulfonic acid, in the presence of a diluent and with exclusion of any moisture. The new sulfonic acid obtained in this way is said to be used for the preparation of dyes.



  <I> Example: </I> <B> 171.5 </B> parts by weight of S-methyl-4-methoxy-6-chloro-l-amino-bejizol become carbon tetrachloride in approximately 700 parts by weight solved.

    To this, <B> 116.5 </B> parts by weight of chlorosulfonic acid are added dropwise with vigorous stirring and good cooling. The mixture is stirred for some time, the carbon tetrachloride distilled off is replaced by technical grade chlorotoluene and slowly heated to 160-1700 ° C. Apparatus and other working conditions are the same as those given in the example of the main patent.



  The 3-methyl-4-metboxy-6-ohlor-l-amino-beiizol-2-sulfonic acid is a colorless powder after suction and drying, which can be crystallized as a sodium salt from water and a diazo compound that is sparingly soluble in water results.

Claims (1)

PATENTANSPRUCII: Verfahren zur Darstellung von 3-Methyl- 4 <B>-</B> methoxy <B>- 6 -</B> chlor<B>- 1 -</B> amino <B>-</B> benzol-2-F3ulfo- säure, dadurch gekennzeichnet, dass man 3- Methyl-4-methoxy-6-eblor-l-amino-benzol mit molekularen Mengen Halogenstilfonsäure, in Gegenwart eines Verdünnungsmittels und unter Ausschluss von jeglicher Feuchtigkeit, behandelt. PATENT CLAIM: Process for the preparation of 3-methyl- 4 <B> - </B> methoxy <B> - 6 - </B> chlorine <B> - 1 - </B> amino <B> - </B> Benzene-2-sulfonic acid, characterized in that 3-methyl-4-methoxy-6-eblor-1-amino-benzene is treated with molecular amounts of halostilfonic acid in the presence of a diluent and with the exclusion of any moisture. Die so erhaltene Säure ist ein farbloses Pulver, das als Natronsalz aus Wasser um kristallisiert werden kann und eine in Was ser schwerlösliche Diazoverbindung ergibt. UNTERANSPRüCHE: <B>1.</B> Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Halogen- sulfonsäure Chlorsulfonsäure verwendet. 2. Verfahren nach Patentansprueb, dadurch gekennzeichnet, dass man als Verdünnungs mittel Chlortoluol verwendet. The acid obtained in this way is a colorless powder which can be crystallized from water as a sodium salt and results in a diazo compound that is sparingly soluble in water. SUBClaims: <B> 1. </B> Process according to patent claim, characterized in that the halosulfonic acid used is chlorosulfonic acid. 2. The method according to patent claim, characterized in that the diluent used is chlorotoluene.
CH153691D 1929-10-24 1930-10-23 Process for the preparation of 3-methyl-4-methoxy-6-chloro-1-aminobenzene-2-sulfonic acid. CH153691A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE153691X 1929-10-24
CH151675T 1930-10-23

Publications (1)

Publication Number Publication Date
CH153691A true CH153691A (en) 1932-03-31

Family

ID=25715848

Family Applications (1)

Application Number Title Priority Date Filing Date
CH153691D CH153691A (en) 1929-10-24 1930-10-23 Process for the preparation of 3-methyl-4-methoxy-6-chloro-1-aminobenzene-2-sulfonic acid.

Country Status (1)

Country Link
CH (1) CH153691A (en)

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