FR2374295A1 - PROCESS FOR PURIFYING CRUDE P-AMINOPHENOL - Google Patents
PROCESS FOR PURIFYING CRUDE P-AMINOPHENOLInfo
- Publication number
- FR2374295A1 FR2374295A1 FR7737139A FR7737139A FR2374295A1 FR 2374295 A1 FR2374295 A1 FR 2374295A1 FR 7737139 A FR7737139 A FR 7737139A FR 7737139 A FR7737139 A FR 7737139A FR 2374295 A1 FR2374295 A1 FR 2374295A1
- Authority
- FR
- France
- Prior art keywords
- aminophenol
- crude
- purifying crude
- paracetamol
- transposition
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Abstract
On purifie le p-aminophénol brut préparé par transposition de nitrobenzène par réduction, en mettant en contact, avec un solvant non miscible à l'eau, une solution aqueuse de p-aminophénol brut sous la forme d'un sel d'acide fort Avant ladite extraction par solvant, le p-aminophénol brut est soumis à des conditions oxydantes suffisantes pour oxyder les impuretés, mais non le p-aminophénol. Application du p-aminophénol pur : intermédiaire dans la fabrication des colorants et du médicament analgésique et antipyrétique connu sous le nom de paracétamol.The crude p-aminophenol prepared by transposition of nitrobenzene by reduction is purified by contacting, with a water-immiscible solvent, an aqueous solution of crude p-aminophenol in the form of a strong acid salt. said solvent extraction, the crude p-aminophenol is subjected to oxidizing conditions sufficient to oxidize the impurities, but not the p-aminophenol. Application of pure p-aminophenol: intermediate in the manufacture of dyes and analgesic and antipyretic drug known as paracetamol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB52846/76A GB1553389A (en) | 1976-12-17 | 1976-12-17 | Purification of aminophenols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2374295A1 true FR2374295A1 (en) | 1978-07-13 |
Family
ID=10465558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7737139A Withdrawn FR2374295A1 (en) | 1976-12-17 | 1977-12-09 | PROCESS FOR PURIFYING CRUDE P-AMINOPHENOL |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5377032A (en) |
| AU (1) | AU3148477A (en) |
| DE (1) | DE2754591A1 (en) |
| FR (1) | FR2374295A1 (en) |
| GB (1) | GB1553389A (en) |
| IL (1) | IL53486A0 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4870209A (en) * | 1987-04-29 | 1989-09-26 | Noramco, Inc. | Process for purifying crude 4-aminophenol |
| CN115318280B (en) * | 2022-07-25 | 2023-05-30 | 万华化学（宁波）有限公司 | Method for regenerating and recovering catalyst and byproduct o-aminophenol from aniline tar |
-
1976
- 1976-12-17 GB GB52846/76A patent/GB1553389A/en not_active Expired
-
1977
- 1977-11-29 IL IL53486A patent/IL53486A0/en unknown
- 1977-12-08 DE DE19772754591 patent/DE2754591A1/en active Pending
- 1977-12-09 FR FR7737139A patent/FR2374295A1/en not_active Withdrawn
- 1977-12-12 JP JP14983477A patent/JPS5377032A/en active Pending
- 1977-12-13 AU AU31484/77A patent/AU3148477A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1553389A (en) | 1979-09-26 |
| AU3148477A (en) | 1979-06-21 |
| IL53486A0 (en) | 1978-01-31 |
| JPS5377032A (en) | 1978-07-08 |
| DE2754591A1 (en) | 1978-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |