GB1308152A - Process for the production of pyridines - Google Patents
Process for the production of pyridinesInfo
- Publication number
- GB1308152A GB1308152A GB1308152DA GB1308152A GB 1308152 A GB1308152 A GB 1308152A GB 1308152D A GB1308152D A GB 1308152DA GB 1308152 A GB1308152 A GB 1308152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyridine
- pyridines
- production
- alkyl
- favoured
- 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
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1308152 Pyridines IMPERIAL CHEMICAL INDUSTRIES Ltd 6 July 1970 [7 July 1969] 34180/69 Heading C2C Pyridine or an alkyl pyridine is produced by contacting a piperidine which has two alkyl groups substituted on the same carbon atom with a hydrogenation catalyst in the presence of hydrogen. The preferred alkyl groups are methyl and ethyl. The reaction is preferably carried out at a temperature in the range 300- 1000‹ C. At lower temperatures in this range the production of alkyl pyridines is favoured and at higher temperature pyridine production is favoured. Suitable catalysts are, for example, ruthenium, iridium, palladium, osmium, rhoddium, platinum, copper chromite or nickel. Platinum and palladium catalysts are suitably supported, e.g. on alumina or charcoal. An example is given of the conversion of 3,3-dimethylpiperidine to mainly 3-methyl pyridine with some pyridine and lutidines.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3418069 | 1969-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1308152A true GB1308152A (en) | 1973-02-21 |
Family
ID=10362384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1308152D Expired GB1308152A (en) | 1969-07-07 | 1969-07-07 | Process for the production of pyridines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1308152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387533A (en) * | 2012-05-08 | 2013-11-13 | 中国科学院大连化学物理研究所 | Method for synthesis of chiral piperidine derivative through iridium-catalyzed asymmetric hydrogenation of pyridine |
| CN106916097A (en) * | 2017-02-13 | 2017-07-04 | 中节能万润股份有限公司 | A kind of preparation method of cis 3,5 lupetidine of high-purity |
-
1969
- 1969-07-07 GB GB1308152D patent/GB1308152A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387533A (en) * | 2012-05-08 | 2013-11-13 | 中国科学院大连化学物理研究所 | Method for synthesis of chiral piperidine derivative through iridium-catalyzed asymmetric hydrogenation of pyridine |
| CN103387533B (en) * | 2012-05-08 | 2015-08-05 | 中国科学院大连化学物理研究所 | A kind of method of asymmetric hydrogenation synthesis of chiral piperidine derivative of iridium catalytic pyridine |
| CN106916097A (en) * | 2017-02-13 | 2017-07-04 | 中节能万润股份有限公司 | A kind of preparation method of cis 3,5 lupetidine of high-purity |
| CN106916097B (en) * | 2017-02-13 | 2019-06-07 | 中节能万润股份有限公司 | A kind of preparation method of the cis- -3,5- lupetidine of high-purity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |