GB1074944A - Manufacture of pyridine of substituted pyridines - Google Patents

Manufacture of pyridine of substituted pyridines

Info

Publication number
GB1074944A
GB1074944A GB254665A GB254665A GB1074944A GB 1074944 A GB1074944 A GB 1074944A GB 254665 A GB254665 A GB 254665A GB 254665 A GB254665 A GB 254665A GB 1074944 A GB1074944 A GB 1074944A
Authority
GB
United Kingdom
Prior art keywords
glutaraldehyde
ammonia
substituted
pyridine
ammonium ions
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
GB254665A
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 GB254665A priority Critical patent/GB1074944A/en
Publication of GB1074944A publication Critical patent/GB1074944A/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

Landscapes

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

Abstract

Pyridine or substituted pyridines are prepared by interacting glutaraldehyde, a substituted glutaraldehyde or a "precursor" thereof in the liquid phase with ammonium ions or ammonia in the presence of elementary sulphur; the term "precursor" being defined to mean a compound which, in the absence of ammonium ions, will give rise to glutaraldehyde or a substituted glutaraldehyde when subjected to the temperature and pH employed in the reaction. Specified precursors are the ethers of 2-hydroxy-3,4-dihydro-2H -pyrans. The sulphur may be introduced as a polysulphide which will give rise to elementary sulphur and the ammonium ions or ammonia may be introduced as such or generated in situ, e.g. when employing ammonia, from hydrolysable amides. A pH in the range 1 to 7 is preferred and may suitably be obtained by use of an ammonium salt and additional acid, preferably that acid corresponding to the ammonium salt.
GB254665A 1965-01-20 1965-01-20 Manufacture of pyridine of substituted pyridines Expired GB1074944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB254665A GB1074944A (en) 1965-01-20 1965-01-20 Manufacture of pyridine of substituted pyridines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB254665A GB1074944A (en) 1965-01-20 1965-01-20 Manufacture of pyridine of substituted pyridines

Publications (1)

Publication Number Publication Date
GB1074944A true GB1074944A (en) 1967-07-05

Family

ID=9741494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB254665A Expired GB1074944A (en) 1965-01-20 1965-01-20 Manufacture of pyridine of substituted pyridines

Country Status (1)

Country Link
GB (1) GB1074944A (en)

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