GB1268193A - Manufacture of pyridine derivatives - Google Patents
Manufacture of pyridine derivativesInfo
- Publication number
- GB1268193A GB1268193A GB4673571A GB4673571A GB1268193A GB 1268193 A GB1268193 A GB 1268193A GB 4673571 A GB4673571 A GB 4673571A GB 4673571 A GB4673571 A GB 4673571A GB 1268193 A GB1268193 A GB 1268193A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyridyl
- heating
- manufacture
- tetrahydrothiopyrans
- tetrahydropyrans
- 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
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
1,268,193. 4 - (Pyridyl) - tetrahydropyrans, -tetrahydrothiopyrans or -piperidines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 3 March, 1969 [20 Dec., 1968], No. 46735/71. Divided out of 1,268,191. Heading C2C. 4 - (Pyridyl)tetrahydropyrans, -tetrahydro - thiopyrans or -piperidines are obtained by a process which comprises heating the corresponding 3-(pyridyl)-pentane-diol, -dithiol or hydroxy thiol. at a temperature of at least 250‹ C. and, when the 4-(pyridyl)-piperidine is desired as the product in the presence of NH 3 . 4 - (Pyridyl)-tetrahydrothiopyrans may also be prepared by heating pyridyl pentane-1,5- diols in the presence of H 2 S, or by heating a pyridyl alkane-hydroxy-thiol in the presence or absence of H 2 S. Examples are given for the production of the compounds. They are useful as intermediates in the preparation of bipyridyls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4673571A GB1268193A (en) | 1968-12-20 | 1968-12-20 | Manufacture of pyridine derivatives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4673571A GB1268193A (en) | 1968-12-20 | 1968-12-20 | Manufacture of pyridine derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1268193A true GB1268193A (en) | 1972-03-22 |
Family
ID=10442391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4673571A Expired GB1268193A (en) | 1968-12-20 | 1968-12-20 | Manufacture of pyridine derivatives |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1268193A (en) |
-
1968
- 1968-12-20 GB GB4673571A patent/GB1268193A/en not_active Expired
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