GB666554A - Preparation of phenols by the sulphonation process - Google Patents
Preparation of phenols by the sulphonation processInfo
- Publication number
- GB666554A GB666554A GB2501047A GB2501047A GB666554A GB 666554 A GB666554 A GB 666554A GB 2501047 A GB2501047 A GB 2501047A GB 2501047 A GB2501047 A GB 2501047A GB 666554 A GB666554 A GB 666554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- phenol
- per cent
- sulphite
- phenate
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
- C07C37/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis by substitution of SO3H groups or a derivative thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A continuous process for the production of a phenol consists in passing steam through a liquid melt of a mixture of an alkali sulphonate and an alkali phenate to distil out the phenol, continuously recovering the by-product alkali sulphite by treatment of the melt residue with water, heating an aqueous reaction mixture of this sulphite in the form of a 25 per cent aqueous solution, part of the phenol, and not more than a 5 per cent excess over the theoretical amount of lime to give alkali phenate and calcium sulphite, separating the alkali phenate, and returning it mixed with additional alkali sulphonate to the fusion melt. The phenols prepared in this way include phenol, and other hydroxy aromatic compounds, e.g. naphthols, and hydroxy heterocyclic compounds, e.g. hydroxypyridines. The preparation of phenol by the claimed process is described, and in this case benzene is sulphonated with oleum at 60-80 DEG C. in the presence of an alkali salt; the temperature is raised subsequently to 150-170 DEG C. and benzene vapour passed into the reactants to give a 90 per cent or more conversion to benzenemonosulphonic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2501047A GB666554A (en) | 1947-09-12 | 1947-09-12 | Preparation of phenols by the sulphonation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2501047A GB666554A (en) | 1947-09-12 | 1947-09-12 | Preparation of phenols by the sulphonation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB666554A true GB666554A (en) | 1952-02-13 |
Family
ID=10220759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2501047A Expired GB666554A (en) | 1947-09-12 | 1947-09-12 | Preparation of phenols by the sulphonation process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB666554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2218311A1 (en) * | 1973-02-21 | 1974-09-13 | Koppers Co Inc |
-
1947
- 1947-09-12 GB GB2501047A patent/GB666554A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2218311A1 (en) * | 1973-02-21 | 1974-09-13 | Koppers Co Inc |
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