CH163888A - Process for preparing an acylaminosulfonic acid chloride of the benzene series. - Google Patents

Process for preparing an acylaminosulfonic acid chloride of the benzene series.

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Publication number
CH163888A
CH163888A CH163888DA CH163888A CH 163888 A CH163888 A CH 163888A CH 163888D A CH163888D A CH 163888DA CH 163888 A CH163888 A CH 163888A
Authority
CH
Switzerland
Prior art keywords
acid chloride
preparing
benzene series
acetylamino
acylaminosulfonic
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 CH163888A publication Critical patent/CH163888A/en

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Description

  

  Verfahren zur Darstellung eines     Acylaminosulfonsäurechlorids    der     Benzolreihe.       Es wurde gefunden, dass man     1-Acet.yl-          amino-2-methoxy-benzol-5-sulfonsäurechlorid     dadurch erhalten kann, dass man auf     1-Ace-          tylamino    - 2-     methoxybenzol        Chlorsulfonsäure     einwirken lässt.  



  Die neue Verbindung soll als Zwischen  produkt zum Aufbau von Farbstoffen, Arznei  mitteln usw. Verwendung finden.  



  <I>Beispiel:</I>  165 Gewichtsteile     1-Acetylamino-2-me-          thoxybenzol    werden in 660 Gewichtsteile       Chlorsulfonsäure    bei 20-30   eingetragen und  etwa 20 Stunden bei Zimmertemperatur ver  rührt. Das Reaktionsgemisch wird dann auf  3000 Gewichtsteile Eis gegeben. Das dabei  sich in fester Form abscheidende     1-Acetyl-          amino-    2     -metboxybenzol    - 5     -sulfonsäurechlorid       wird von der sauren Brühe abgesaugt und  mit kaltem Wasser säurefrei gewaschen.

   Aus  Benzol kristallisiert     1-Acetylamino-2-rnethoxy-          benzol-5-sulfonsäurechlorid    in farblosen langen  Prismen, Schmelzpunkt 149   C.



  Process for preparing an acylaminosulfonic acid chloride of the benzene series. It has been found that 1-acetylamino-2-methoxybenzene-5-sulfonic acid chloride can be obtained by letting chlorosulfonic acid act on 1-acetylamino-2-methoxybenzene.



  The new compound is intended to be used as an intermediate product for the synthesis of dyes, drugs, etc.



  <I> Example: </I> 165 parts by weight of 1-acetylamino-2-methoxybenzene are added to 660 parts by weight of chlorosulfonic acid at 20-30 and stirred for about 20 hours at room temperature. The reaction mixture is then poured onto 3000 parts by weight of ice. The 1-acetylamino-2-metboxybenzene-5-sulfonic acid chloride which separates out in solid form is suctioned off from the acidic broth and washed free of acid with cold water.

   1-Acetylamino-2-methoxybenzene-5-sulfonic acid chloride crystallizes from benzene in colorless long prisms, melting point 149 C.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 1-Acetyl- amino-2-methoxy-benzol-5-sulfonsäurechlorid, dadurch gekennzeichnet, dass man auf 1- Acetylamino - 2 - methoxybenzol Chlorsulfon- säure einwirken lässt. Aus Benzol kristallisiert das neue Pro dukt in farblosen. langen Prismen vom Schmelzpunkt 149 C. PATENT CLAIM: Process for the preparation of 1-acetylamino-2-methoxy-benzene-5-sulfonic acid chloride, characterized in that chlorosulfonic acid is allowed to act on 1-acetylamino-2-methoxybenzene. The new product crystallizes from benzene in colorless. long prisms with a melting point of 149 C.
CH163888D 1931-09-09 1932-08-26 Process for preparing an acylaminosulfonic acid chloride of the benzene series. CH163888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE163888X 1931-09-09

Publications (1)

Publication Number Publication Date
CH163888A true CH163888A (en) 1933-09-15

Family

ID=5683951

Family Applications (1)

Application Number Title Priority Date Filing Date
CH163888D CH163888A (en) 1931-09-09 1932-08-26 Process for preparing an acylaminosulfonic acid chloride of the benzene series.

Country Status (1)

Country Link
CH (1) CH163888A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111988A (en) * 1977-01-10 1978-09-05 The Dow Chemical Company 4-(2,2-Dichloro-1,1-difluoroethoxybenzene) sulfonyl chloride and its preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111988A (en) * 1977-01-10 1978-09-05 The Dow Chemical Company 4-(2,2-Dichloro-1,1-difluoroethoxybenzene) sulfonyl chloride and its preparation

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