CH167380A - Process for the preparation of 1-acetylamino-2-methyl-4-chlorobenzene-5-sulfonic acid chloride. - Google Patents
Process for the preparation of 1-acetylamino-2-methyl-4-chlorobenzene-5-sulfonic acid chloride.Info
- Publication number
- CH167380A CH167380A CH167380DA CH167380A CH 167380 A CH167380 A CH 167380A CH 167380D A CH167380D A CH 167380DA CH 167380 A CH167380 A CH 167380A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfonic acid
- acetylamino
- acid chloride
- preparation
- chlorobenzene
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung von 1-Acetylamino-2.4-dimethozybenzol-6-sulfonsäurechlorid. Es wurde gefunden, dass man 1-Acetyl- amino-2 . 4 - dimethoxybenzol - 5 - sulfonsäure- chlorid dadurch erhalten kann, dass man auf 1-Acetylamino-2 . 4-dimethoxybenzol-5- sulfonsäure Chlorsulfonsäure einwirken lässt.
<I>Beispiel:</I> 195 Gewichtsteile 1-Acetylamino-2.4-di- methoxybenzol werden bei 20 bis 30 in 1170 Gewichtsteile Chlorsulfonsäure einge tragen und 10 Stunden bei 30 bis 40 ver rührt. Das Reaktionsgemisch wird dann auf 3000 Gewichtsteile Eis gegeben, das dabei in fester Form sich abscheidende 1-Acetyl- amino-2 . 4 - dimethoxybenzol - 5 - sulfonsäure- chlorid wird von der sauren Brühe abge saugt und mit kaltem Wasser säurefrei ge- waschen.
Aus Aceton kristallisiert 1-Acetyl- amino-2 . 4 - dimethoxybenzol - 5 - sulfonsäure- chlorid in farblosen rhombischen Kristallen vom Schmelzpunkt<B>175'.</B> Es soll als Zwi schenprodukt zum Aufbau von Farbstoffen, Arzneimitteln usw. Verwendung finden.
Process for the preparation of 1-acetylamino-2,4-dimethozybenzene-6-sulfonic acid chloride. It has been found that 1-acetyl-amino-2. 4 - dimethoxybenzene - 5 - sulfonic acid chloride can be obtained by using 1-acetylamino-2. 4-dimethoxybenzene-5-sulfonic acid allows chlorosulfonic acid to take effect.
<I> Example: </I> 195 parts by weight of 1-acetylamino-2,4-dimethoxybenzene are entered at 20 to 30 in 1170 parts by weight of chlorosulfonic acid and stirred at 30 to 40 for 10 hours. The reaction mixture is then poured onto 3000 parts by weight of ice, the 1-acetylamino-2 which separates out in solid form. 4 - dimethoxybenzene - 5 - sulfonic acid chloride is sucked off from the acidic broth and washed acid-free with cold water.
1-Acetylamino-2 crystallizes from acetone. 4 - dimethoxybenzene - 5 - sulfonic acid chloride in colorless rhombic crystals with a melting point of <B> 175 '. </B> It is intended to be used as an intermediate product in the synthesis of dyes, drugs, etc.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE167380X | 1931-09-09 | ||
| CH163888T | 1932-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH167380A true CH167380A (en) | 1934-02-15 |
Family
ID=25717877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH167380D CH167380A (en) | 1931-09-09 | 1932-08-26 | Process for the preparation of 1-acetylamino-2-methyl-4-chlorobenzene-5-sulfonic acid chloride. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH167380A (en) |
-
1932
- 1932-08-26 CH CH167380D patent/CH167380A/en unknown
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