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.Info
- 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
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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)
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)
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 |
-
1932
- 1932-08-26 CH CH163888D patent/CH163888A/en unknown
Cited By (1)
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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