GB689608A - Improvements in the production of gamma-sulphonyl carboxylic acids - Google Patents
Improvements in the production of gamma-sulphonyl carboxylic acidsInfo
- Publication number
- GB689608A GB689608A GB8160/51A GB816051A GB689608A GB 689608 A GB689608 A GB 689608A GB 8160/51 A GB8160/51 A GB 8160/51A GB 816051 A GB816051 A GB 816051A GB 689608 A GB689608 A GB 689608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphinic
- acids
- mixture
- salts
- sulphonyl
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
g -Sulphonyl carboxylic acids are made by reacting aliphatic g -lactones at elevated temperatures up to about 250 DEG C. with salts of sulphinic acids, and acidifying the reaction product. In examples, g -butyrolactone in excess is heated with (1) benzene sulphinic acid sodium salt; (2) p-toluene sulphinic acid sodium salt; (3) the mixture of sulphinic acid sodium salts obtained by reducing with zinc dust and hydrochloric acid and neutralizing with caustic soda the mixture of sulphochlorides obtained by the action of a mixture of sulphur dioxide and chlorine or a mixture of paraffins of boiling range 250-320 DEG C. The sodium salts first obtained are converted to the acids by treatment with dilute hydrochloric acid. The calcium, zinc, or potassium salts of sulphinic acids may also be used, and other sulphinic acids referred to are the halogen or alkoxy substitution products of benzene sulphinic acid, and methyl-, ethyl-, butyl-, decyl-, or cycloalkyl-sulphinic acids.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE689608X | 1950-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689608A true GB689608A (en) | 1953-04-01 |
Family
ID=6598754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8160/51A Expired GB689608A (en) | 1950-04-13 | 1951-04-09 | Improvements in the production of gamma-sulphonyl carboxylic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235928B1 (en) * | 1996-09-27 | 2001-05-22 | Pharmacia & Upjohn Company | β-sulfonyl hydroxamic acids |
-
1951
- 1951-04-09 GB GB8160/51A patent/GB689608A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235928B1 (en) * | 1996-09-27 | 2001-05-22 | Pharmacia & Upjohn Company | β-sulfonyl hydroxamic acids |
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