GB866450A - Improvements in or relating to 3,4-dichlorotetra-hydrothiophene-1,1-dioxides - Google Patents
Improvements in or relating to 3,4-dichlorotetra-hydrothiophene-1,1-dioxidesInfo
- Publication number
- GB866450A GB866450A GB26567/57A GB2656757A GB866450A GB 866450 A GB866450 A GB 866450A GB 26567/57 A GB26567/57 A GB 26567/57A GB 2656757 A GB2656757 A GB 2656757A GB 866450 A GB866450 A GB 866450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dioxide
- isomer
- cis
- trans
- chlorination
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/46—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom
- C07D333/48—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom by oxygen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises the cis and trans stereoisomers of 3,4-dichloro-tetrahydrothiophene-1,1-dioxide and a process for the preparation of the cis isomer by chlorinating 2,5-dihydrothiophene-1, 1-dioxide with gaseous chlorine in a non polar liquid containing no chlorination catalysts which are ionic in nature and a process for the preparation of the trans isomer by chlorinating 2,5-dihydrothiophene-1,1-dioxide with gaseous chlorine in a polar liquid medium or in a non polar solvent which contains a chlorination catalyst which is ionic in nature. The chlorination product from both processes contains a mixture of isomers containing predominantly the desired isomer and the isomers are separated by repeated recrystalisations. In examples the cis isomer is prepared in a carbon tetrachloride medium and the trans isomer in a chloroform, chlorobenzene, carbontetrachloride and benzene medium using ferric chloride, iron, iodine, and antimony and aluminium chlorides as chlorination catalysts.ALSO:Nematocidal compositions comprise an inert, non-alkaline diluent and, as active ingredient, from 10 to 90% of a cis or trans stereoisomer of 3,4 - dichlorotetrahydrothiophene - 1,1 - dioxide. The active compounds may be formulated into any of the usual solid or liquid forms and surfactants may be added.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US866450XA | 1956-08-24 | 1956-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB866450A true GB866450A (en) | 1961-04-26 |
Family
ID=22199925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26567/57A Expired GB866450A (en) | 1956-08-24 | 1957-08-22 | Improvements in or relating to 3,4-dichlorotetra-hydrothiophene-1,1-dioxides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB866450A (en) |
-
1957
- 1957-08-22 GB GB26567/57A patent/GB866450A/en not_active Expired
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