GB960176A - Dipyridyl manufacturing process - Google Patents
Dipyridyl manufacturing processInfo
- Publication number
- GB960176A GB960176A GB1064562A GB1064562A GB960176A GB 960176 A GB960176 A GB 960176A GB 1064562 A GB1064562 A GB 1064562A GB 1064562 A GB1064562 A GB 1064562A GB 960176 A GB960176 A GB 960176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyridine
- dipyridyl
- solvent
- manufacturing process
- catalyst
- 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
- C07D213/22—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 containing two or more pyridine rings directly linked together, e.g. bipyridyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Catalysts (AREA)
Abstract
2,21-Dipyridyl is prepared by contacting pyridine with a Raney nickel catalyst at elevated temperature, the products, which include 2,21-dipyridyl, being removed continuously or intermittently from contact with the catalyst by displacement by a mixture of pyridine and an inert organic solvent. Suitable organic solvents are for example hydrocarbons such as toluene, petroleum fractions and methyl cyclohexane and ethers such as dibutyl ether and dioxane. The 2,21-dipyridyl crystallises out of the pyridine/solvent solution on cooling and can be filtered off. The pyridine/solvent mixture left may be reused in the process with the addition as necessary of pyridine or solvent. Specification 899,013 also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1064562A GB960176A (en) | 1962-03-20 | 1962-03-20 | Dipyridyl manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1064562A GB960176A (en) | 1962-03-20 | 1962-03-20 | Dipyridyl manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB960176A true GB960176A (en) | 1964-06-10 |
Family
ID=9971660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1064562A Expired GB960176A (en) | 1962-03-20 | 1962-03-20 | Dipyridyl manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB960176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699642A (en) * | 2017-01-16 | 2017-05-24 | 南京红太阳生物化学有限责任公司 | Method for gas phase continuous production of 2,2'-dipyridyl |
-
1962
- 1962-03-20 GB GB1064562A patent/GB960176A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106699642A (en) * | 2017-01-16 | 2017-05-24 | 南京红太阳生物化学有限责任公司 | Method for gas phase continuous production of 2,2'-dipyridyl |
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