GB915768A - A process for the isolation of 4.4-dihydroxy diphenyl sulphone from mixtures thereof with the isomeric 2.4-dihydroxy diphenyl sulphone - Google Patents
A process for the isolation of 4.4-dihydroxy diphenyl sulphone from mixtures thereof with the isomeric 2.4-dihydroxy diphenyl sulphoneInfo
- Publication number
- GB915768A GB915768A GB3508260A GB3508260A GB915768A GB 915768 A GB915768 A GB 915768A GB 3508260 A GB3508260 A GB 3508260A GB 3508260 A GB3508260 A GB 3508260A GB 915768 A GB915768 A GB 915768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dihydroxy diphenyl
- diphenyl sulphone
- isomeric
- mixture
- tetrachloroethane
- 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
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/06—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for the separation of 4,41-dihydroxy diphenyl sulphone from a mixture thereof with the isomeric 2,41-dihydroxy diphenyl sulphone comprises contacting the mixture with 1,1,2,2-tetrachloroethane and separating the resulstant solution of 1,1,2,2-tetrachoroethane containing substantially only the 2,41-isomer from the 4,41-isomer which is only slightly soluble in the tetrachloroethane. The isomeric mixture may be prepared by reacting phenol with sulphuric acid or p-phenol sulphonic acid in the known manner and the tetrachloroethane may then be added to the reaction mixture which is cooled to about 100 DEG C. and the 4,41-isomer separated off e.g. by filtration. An example is given. Specification 915,767 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL244375 | 1959-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB915768A true GB915768A (en) | 1963-01-16 |
Family
ID=19751981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3508260A Expired GB915768A (en) | 1959-10-15 | 1960-10-13 | A process for the isolation of 4.4-dihydroxy diphenyl sulphone from mixtures thereof with the isomeric 2.4-dihydroxy diphenyl sulphone |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE595981A (en) |
| GB (1) | GB915768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627415A1 (en) * | 1993-05-31 | 1994-12-07 | Nicca Chemical Co., Ltd. | A method of producing a 2,4'-dihydroxydiphenylsulfone |
-
1960
- 1960-10-13 GB GB3508260A patent/GB915768A/en not_active Expired
- 1960-10-13 BE BE595981A patent/BE595981A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627415A1 (en) * | 1993-05-31 | 1994-12-07 | Nicca Chemical Co., Ltd. | A method of producing a 2,4'-dihydroxydiphenylsulfone |
Also Published As
| Publication number | Publication date |
|---|---|
| BE595981A (en) | 1961-04-13 |
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