GB1102261A - Manufacture of pyridines - Google Patents

Manufacture of pyridines

Info

Publication number
GB1102261A
GB1102261A GB283866A GB283866A GB1102261A GB 1102261 A GB1102261 A GB 1102261A GB 283866 A GB283866 A GB 283866A GB 283866 A GB283866 A GB 283866A GB 1102261 A GB1102261 A GB 1102261A
Authority
GB
United Kingdom
Prior art keywords
pyridine
glutaraldehyde
ions
chloropyridine
dihydro
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
Application number
GB283866A
Inventor
John Edward Colchester
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB283866A priority Critical patent/GB1102261A/en
Publication of GB1102261A publication Critical patent/GB1102261A/en
Expired legal-status Critical Current

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
    • 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
    • C07D213/14—Preparation from compounds containing heterocyclic oxygen

Abstract

Pyridine or a substituted pyridine is prepared by interacting glutaraldehyde, a substituted glutaraldehyde or a precursor of such a compound, in the liquid phase with ammonia or ammonium ions, in the presence of molecular oxygen, cupric or ferric ions and chloride, bromide or iodide ions. Suitable precursors are ethers, especially the C1-C6 alkyl ethers, of 2 - hydroxy - 3,4 - dihydro - 2H - pyrans. The ammonium ions are preferably introduced in the form of an ammonium salt. A solvent may be present, in particular an aqueous C1-C6 alkanoic acid. In the examples: (a) 2-methoxy-3,4 - dihydro - 2H - pyran is converted to pyridine, 3-chloropyridine and 3,5-dichloropyridine and (b) glutaraldehyde is converted to pyridine and 3-chloropyridine.
GB283866A 1966-01-21 1966-01-21 Manufacture of pyridines Expired GB1102261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB283866A GB1102261A (en) 1966-01-21 1966-01-21 Manufacture of pyridines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB283866A GB1102261A (en) 1966-01-21 1966-01-21 Manufacture of pyridines

Publications (1)

Publication Number Publication Date
GB1102261A true GB1102261A (en) 1968-02-07

Family

ID=9746901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB283866A Expired GB1102261A (en) 1966-01-21 1966-01-21 Manufacture of pyridines

Country Status (1)

Country Link
GB (1) GB1102261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6184384B1 (en) 1998-07-15 2001-02-06 Reilly Industries, Inc. Dechlorination of pyridines in acidic, zinc-containing mediums
WO2001042214A1 (en) * 1999-12-08 2001-06-14 Bayer Aktiengesellschaft Method for producing optionally substituted 3-halopyridines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6184384B1 (en) 1998-07-15 2001-02-06 Reilly Industries, Inc. Dechlorination of pyridines in acidic, zinc-containing mediums
WO2001042214A1 (en) * 1999-12-08 2001-06-14 Bayer Aktiengesellschaft Method for producing optionally substituted 3-halopyridines

Similar Documents

Publication Publication Date Title
GB1102261A (en) Manufacture of pyridines
GB1240982A (en) Benzothiazepine derivatives
GB1326327A (en) Process for the preparation of bis-p-chlorophenoxy-acetyl-urea
ES300658A1 (en) Procedure for the production of a new polipepturo (Machine-translation by Google Translate, not legally binding)
GB1427888A (en) Process for the preparation of trimethylbenzoquinone
GB1239567A (en)
GB1219176A (en) Antihypertensive compositions and their preparation
GB1308561A (en) Manufacture of 1,1-disubstituted-4,4-bipyridylium salts and related compounds
GB1110865A (en) Manufacture of pyridines
GB1220781A (en) Process for the production of nitriles
JPS539717A (en) Preparation of sulfoxyimines
GB1038529A (en) 7-(ª‡-substituted acylamino) cephalosporanic acid and derivatives thereof
ES471336A1 (en) Highly selective oxidizing process for preparing pyridin-carboxylic acids
GB1233643A (en)
GB1240928A (en) Manufacture of pyridine bases
GB1260072A (en) Process for the production of 2-hydroxyquinoline-4-carboxylic acids and salts thereof
GB1241839A (en) Pyridinium compounds
GB1094197A (en) Production of acetic acid
GB1055677A (en) Process for the cleaning of equipment
GB1074944A (en) Manufacture of pyridine of substituted pyridines
GB1171104A (en) Alpha-Naphthylamine Derivatives
GB709176A (en) Improvements relating to the preparation of isonicotinic acid
GB940488A (en) Penicillins
GB1395124A (en) Naphthalene derivatives
GB1192523A (en) Naphthalene Derivatives