GB920526A - Production of pyridine bases - Google Patents
Production of pyridine basesInfo
- Publication number
- GB920526A GB920526A GB39455/60A GB3945560A GB920526A GB 920526 A GB920526 A GB 920526A GB 39455/60 A GB39455/60 A GB 39455/60A GB 3945560 A GB3945560 A GB 3945560A GB 920526 A GB920526 A GB 920526A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyridine
- ketone
- alumina
- silica
- methyl
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
Catalysts for the synthesis of pyridine bases comprise silica, alumina or mixtures of these. Preferably the catalysts also contain titania, zirconia, ceria or thoria and may also contain zinc, cadmium, tin, lead, tungsten, nickel, cobalt, chromium, molybdenum, iron, copper, palladium or silver or a compound thereof. In the examples pyridines bases are synthesized from acrolein, ammonia and a saturated ketone using as catalyst (a) a mixture of silica and alumina impregnated with lead fluoride and (b) a mixture of silica and alumina.ALSO:Pyridine bases (pyridine and alkyl pyridines) are obtained by heating together a mixture of acrolein, ammonia and a saturated aliphatic ketone having at least one methyl group adjacent to the carbonyl group. The process is preferably carried out at 300-550 DEG C. in the presence of a condensation catalyst. The preferred catalysts are silica, alumina or mixtures of these which may contain titania, zirconia, ceria or thoria and certain other metals or metal compounds. Suitable ketones are, for example, acetone, methyl ethyl ketone, diethyl ketone and methyl isopropyl ketone. Among the products specified are pyridine, a -picoline, b -picoline, 2,4,6-collidine, 2,6-lutidine, 2-ethyl pyridine and 2-ethyl-3-methyl pyridine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39455/60A GB920526A (en) | 1960-11-17 | 1960-11-17 | Production of pyridine bases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39455/60A GB920526A (en) | 1960-11-17 | 1960-11-17 | Production of pyridine bases |
Publications (1)
Publication Number | Publication Date |
---|---|
GB920526A true GB920526A (en) | 1963-03-06 |
Family
ID=10409641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB39455/60A Expired GB920526A (en) | 1960-11-17 | 1960-11-17 | Production of pyridine bases |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB920526A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2639701A1 (en) * | 1976-09-03 | 1978-03-09 | Degussa | METHOD FOR MANUFACTURING SUBSTITUTED PYRIDINS |
DE2703069A1 (en) * | 1977-01-26 | 1978-07-27 | Degussa | PROCESS FOR THE PREPARATION OF 2-METHYLPYRIDINE AND 3-METHYLPYRIDINE |
DE2712694A1 (en) * | 1977-03-23 | 1978-09-28 | Degussa | METHOD FOR MANUFACTURING SUBSTITUTED PYRIDINS |
CN105732485A (en) * | 2016-05-08 | 2016-07-06 | 邯郸市赵都精细化工有限公司 | Method for synthesizing 3-picoline |
CN114805184A (en) * | 2022-05-06 | 2022-07-29 | 山东明化新材料有限公司 | Method for preparing tri-methylpyridine |
-
1960
- 1960-11-17 GB GB39455/60A patent/GB920526A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2639701A1 (en) * | 1976-09-03 | 1978-03-09 | Degussa | METHOD FOR MANUFACTURING SUBSTITUTED PYRIDINS |
DE2703069A1 (en) * | 1977-01-26 | 1978-07-27 | Degussa | PROCESS FOR THE PREPARATION OF 2-METHYLPYRIDINE AND 3-METHYLPYRIDINE |
US4149002A (en) * | 1977-01-26 | 1979-04-10 | Deutsche Gold- Und Silber Scheideanstalt Vormals Roessler | Process for the production of 2-methyl pyridine and 3-methyl pyridine |
DE2712694A1 (en) * | 1977-03-23 | 1978-09-28 | Degussa | METHOD FOR MANUFACTURING SUBSTITUTED PYRIDINS |
CN105732485A (en) * | 2016-05-08 | 2016-07-06 | 邯郸市赵都精细化工有限公司 | Method for synthesizing 3-picoline |
CN114805184A (en) * | 2022-05-06 | 2022-07-29 | 山东明化新材料有限公司 | Method for preparing tri-methylpyridine |
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