GB1265235A - - Google Patents
Info
- Publication number
- GB1265235A GB1265235A GB1265235DA GB1265235A GB 1265235 A GB1265235 A GB 1265235A GB 1265235D A GB1265235D A GB 1265235DA GB 1265235 A GB1265235 A GB 1265235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- preferred
- pyridine
- carbon atoms
- aldehyde
- hydrocarbon
- 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
- C07D213/08—Preparation by ring-closure
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
1,265,235. Pyridine. RUTGERSWERKE A.G. 15 April, 1970 [24 June, 1969], No. 17992/70. Heading C2C. Pyridine is produced by the reaction of a straight-chain aldehyde containing 4 carbon atoms, formaldehyde and/or methanol and ammonia in the presence of a dehydration/ dehydrogenation catalyst at a temperature of from 300‹ to 600‹ C. and of an aromatic, aliphatic or cycloaliphatic hydrocarbon containing 6-9 carbon atoms. The preferred catalysts are those consisting of silicic acid and alumina. The preferred C 4 aldehyde is crotononaldehyde and the preferred hydrocarbon is benzene. A small amount of picoline may also be formed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691931945 DE1931945C3 (en) | 1969-06-24 | 1969-06-24 | Process for the preparation of pyridine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1265235A true GB1265235A (en) | 1972-03-01 |
Family
ID=5737849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1265235D Expired GB1265235A (en) | 1969-06-24 | 1970-04-15 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1931945C3 (en) |
GB (1) | GB1265235A (en) |
NL (1) | NL7008689A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675410A (en) * | 1983-07-11 | 1987-06-23 | Nepera Inc. | Process for the production of pyridine or alkyl substituted pyridines |
-
1969
- 1969-06-24 DE DE19691931945 patent/DE1931945C3/en not_active Expired
-
1970
- 1970-04-15 GB GB1265235D patent/GB1265235A/en not_active Expired
- 1970-06-15 NL NL7008689A patent/NL7008689A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1931945A1 (en) | 1971-01-14 |
DE1931945B2 (en) | 1973-03-08 |
DE1931945C3 (en) | 1973-09-27 |
NL7008689A (en) | 1970-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |