GB701267A - Improvements relating to 6:7:8:9-tetrahydrodibenzothiophene and its associated compounds - Google Patents
Improvements relating to 6:7:8:9-tetrahydrodibenzothiophene and its associated compoundsInfo
- Publication number
- GB701267A GB701267A GB27516/50A GB2751650A GB701267A GB 701267 A GB701267 A GB 701267A GB 27516/50 A GB27516/50 A GB 27516/50A GB 2751650 A GB2751650 A GB 2751650A GB 701267 A GB701267 A GB 701267A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- ring
- tetrahydrodibenzothiophene
- chloro
- closure
- 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
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Abstract
6:7:8:9-Tetrahydrodibenzothiophene and substitution products thereof are manufactured by ring-closing by dehydration a 2-phenylmercaptocyclohexanone, which may contain in either or both of the rings further substituents not interfering with the ring-closure, and which may be first prepared by condensing together a thiophenol and a 2-chloro- or 2-bromo-cyclohexanone, which may be similarly further substituted. This initial condensation may be effected by heating the reagents in aqueous ethanol in the presence of sodium hydroxide or other alkali, and the ring-closure by heating with phosphorus pentoxide, sulphuric acid or zinc chloride. The products may be converted to the corresponding dibenzothiophenes by dehydrogenation, e.g. by refluxing with chloranil in xylene or by heating with selenium. Examples describe the preparation of 6:7:8:9-tetrahydrohydrodibenzothiophene and dibenzothiophene, and their 2-methyl, 2-chloro, 1:2- and 3:4-benzo and mixed 1- and 3-methyl derivatives, and the intermediate ketosulphides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27516/50A GB701267A (en) | 1950-11-10 | 1950-11-10 | Improvements relating to 6:7:8:9-tetrahydrodibenzothiophene and its associated compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27516/50A GB701267A (en) | 1950-11-10 | 1950-11-10 | Improvements relating to 6:7:8:9-tetrahydrodibenzothiophene and its associated compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701267A true GB701267A (en) | 1953-12-23 |
Family
ID=10260847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27516/50A Expired GB701267A (en) | 1950-11-10 | 1950-11-10 | Improvements relating to 6:7:8:9-tetrahydrodibenzothiophene and its associated compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3111527A (en) * | 1962-03-14 | 1963-11-19 | Parke Davis & Co | Amine compounds and methods for their production |
-
1950
- 1950-11-10 GB GB27516/50A patent/GB701267A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3111527A (en) * | 1962-03-14 | 1963-11-19 | Parke Davis & Co | Amine compounds and methods for their production |
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