GB1157001A - Manufacture of Pyridine or Substituted Pyridines - Google Patents

Manufacture of Pyridine or Substituted Pyridines

Info

Publication number
GB1157001A
GB1157001A GB3958166A GB3958166A GB1157001A GB 1157001 A GB1157001 A GB 1157001A GB 3958166 A GB3958166 A GB 3958166A GB 3958166 A GB3958166 A GB 3958166A GB 1157001 A GB1157001 A GB 1157001A
Authority
GB
United Kingdom
Prior art keywords
ammonium
pyridine
ions
cupric
salts
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
GB3958166A
Inventor
John Edward Colchester
John Anthony Corran
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 GB3958166A priority Critical patent/GB1157001A/en
Publication of GB1157001A publication Critical patent/GB1157001A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)

Abstract

1,157,001. Pyridine and substituted pyridine. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Sept., 1967 [5 Sept., 1966], No. 39581/66. Heading C2C. The invention relates to a process for the manufacture of pyridine or substituted pyridine which comprises interacting a starting material containing a partly or fully reduced pyridine ring, e.g. piperidine or tetrahydropyridine with molecular oxygen in the liquid phase in the presence of ions of a metal of variable valency, for example, iron, cobalt, nickel or chromium, but the use of cupric ions is especially preferred, which ions may be derived from inorganic salts, for example, cupric nitrate, cupric or ferric halides or ferric ammonium sulphate, or from organic salts; in particular salts of carboxylic acids may be used, for example cupric acetate. Whether the metal ions are present or not, it is preferred to carry out the reaction in the presence of ammonium ions preferably introduced in the form of an ammonium salt; such as aliphatic carboxylic acids (for example ammonium acetate) and the salts of mineral acids (for example ammonium sulphate, ammonium nitrate and ammonium halides). Alternatively, gaseous ammonia or a solution of ammonia may be introduced into the reaction mixture. Amides hydrolysable to form ammonium ions, for example formamide or urea, may also be employed. The examples show the production of pyridine from 1,2,3,6-tetrahydropyridine and piperidine.
GB3958166A 1966-09-05 1966-09-05 Manufacture of Pyridine or Substituted Pyridines Expired GB1157001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3958166A GB1157001A (en) 1966-09-05 1966-09-05 Manufacture of Pyridine or Substituted Pyridines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3958166A GB1157001A (en) 1966-09-05 1966-09-05 Manufacture of Pyridine or Substituted Pyridines

Publications (1)

Publication Number Publication Date
GB1157001A true GB1157001A (en) 1969-07-02

Family

ID=10410330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3958166A Expired GB1157001A (en) 1966-09-05 1966-09-05 Manufacture of Pyridine or Substituted Pyridines

Country Status (1)

Country Link
GB (1) GB1157001A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6392044B1 (en) 1999-07-06 2002-05-21 Bayer Aktiengesellschaft Racemization of R,S-dioxo-benzylpyrrolopiperidine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6392044B1 (en) 1999-07-06 2002-05-21 Bayer Aktiengesellschaft Racemization of R,S-dioxo-benzylpyrrolopiperidine

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed