CH169243A - Process for the preparation of 5-chloro-2-benzoyl-acetylamino-1-methoxybenzene-3-sulfonic acid. - Google Patents
Process for the preparation of 5-chloro-2-benzoyl-acetylamino-1-methoxybenzene-3-sulfonic acid.Info
- Publication number
- CH169243A CH169243A CH169243DA CH169243A CH 169243 A CH169243 A CH 169243A CH 169243D A CH169243D A CH 169243DA CH 169243 A CH169243 A CH 169243A
- Authority
- CH
- Switzerland
- Prior art keywords
- chloro
- methoxybenzene
- sulfonic acid
- preparation
- acetylamino
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung von 5-Chlor-2-benzoyl-acetylamino-I-methogybenzol-3- sulfosäure. Es wurde gefunden, dass man 5-Chlor-2 benzoylacetylamino-l-inethoxybenzol-3-sulfo- säure dadurch erhalten kann, dass man 5- Chlor- 2-benzoylacetylamino-1-methoxybenzol mit einem sulfonierenden Mittel behandelt.
<I>Beispiel:</I> 100 gr 5 -Chlor- 2 -benzoylacetylamino -1 inethoxybenzol werden unter Rühren in "000 gr Schwefelsäure von 20 % Anhydridgehalt ein- getragen und einige Zeit bei 25 o gerührt bis eine Probe sich in verdünnter Sodalösung klar löst. Dann giesst man auf Eis, saugt die ausgeschiedene 5-Chlor-2-benzoylacetylamino- 1-methoxybenzolsulfosäure ab.
Die neue Sulfon- säure ist in Wasser löslich und bildet gut kristallisierende Alkalisalze, die man aus Wasser umkristallisieren kann. Sie kann mit Diazoverbindungen zu Farbstoffen gekuppelt werden.
Process for the preparation of 5-chloro-2-benzoyl-acetylamino-I-methogybenzene-3-sulfonic acid. It has been found that 5-chloro-2-benzoylacetylamino-1-inethoxybenzene-3-sulfonic acid can be obtained by treating 5-chloro-2-benzoylacetylamino-1-methoxybenzene with a sulfonating agent.
<I> Example: </I> 100 grams of 5-chloro-2-benzoylacetylamino-1-inethoxybenzene are introduced into "000 grams of sulfuric acid with an anhydride content of 20% while stirring and stirred for some time at 25 ° until a sample is in dilute soda solution It is then poured onto ice and the 5-chloro-2-benzoylacetylamino-1-methoxybenzenesulfonic acid which has separated out is filtered off with suction.
The new sulfonic acid is soluble in water and forms alkali salts that crystallize well and can be recrystallized from water. It can be coupled with diazo compounds to form dyes.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE169243X | 1931-12-14 | ||
| CH164838T | 1932-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH169243A true CH169243A (en) | 1934-05-15 |
Family
ID=25718056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH169243D CH169243A (en) | 1931-12-14 | 1932-11-15 | Process for the preparation of 5-chloro-2-benzoyl-acetylamino-1-methoxybenzene-3-sulfonic acid. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH169243A (en) |
-
1932
- 1932-11-15 CH CH169243D patent/CH169243A/en unknown
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