IE33558L - Manufacture of 3, 5-dichloro-2, 6-difluoro-4-hydroxypyridine - Google Patents

Manufacture of 3, 5-dichloro-2, 6-difluoro-4-hydroxypyridine

Info

Publication number
IE33558L
IE33558L IE691275A IE127569A IE33558L IE 33558 L IE33558 L IE 33558L IE 691275 A IE691275 A IE 691275A IE 127569 A IE127569 A IE 127569A IE 33558 L IE33558 L IE 33558L
Authority
IE
Ireland
Prior art keywords
dichloro
difluoro
hydroxypyridine
manufacture
sept
Prior art date
Application number
IE691275A
Other versions
IE33558B1 (en
Original Assignee
Ici 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 Ici Ltd filed Critical Ici Ltd
Publication of IE33558L publication Critical patent/IE33558L/en
Publication of IE33558B1 publication Critical patent/IE33558B1/en

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
    • C07D213/60—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 with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/62—Oxygen or sulfur atoms
    • C07D213/63—One oxygen atom
    • C07D213/68—One oxygen atom attached in position 4

Landscapes

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

Abstract

1,255,153. Fluoropyridines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 16 Sept., 1969 [30 -Sept., 1968], No. 46315/68. Heading C2C. 3,5 - Dichloro - 2,6 - difluoro - 4 - hydroxypyridine and salts thereof are prepared by reaction of 3,5 - dichloro - 2,4,6 - trifluoropyridine with aqueous sodium or potassium carbonate or bicarbonate to form the sodium or potassium salt, followed by acidification to form the free 4-hydroxy compound, together with the tautomeric 3,5-dichloro-2,4-difluoro- 6-pyridone, followed if desired by salification. [GB1255153A]
IE1275/69A 1968-09-30 1969-09-11 Manufacture of 3,5-dichloro-2,6-difluoro-4-hydroxypyridine and salts thereof IE33558B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46315/68A GB1255153A (en) 1968-09-30 1968-09-30 Manufacture of 3,5-dichloro-2,6-difluoro-4-hydroxypyridine and salts thereof

Publications (2)

Publication Number Publication Date
IE33558L true IE33558L (en) 1970-03-30
IE33558B1 IE33558B1 (en) 1974-08-07

Family

ID=10440745

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1275/69A IE33558B1 (en) 1968-09-30 1969-09-11 Manufacture of 3,5-dichloro-2,6-difluoro-4-hydroxypyridine and salts thereof

Country Status (5)

Country Link
CH (1) CH521342A (en)
DE (1) DE1949422A1 (en)
GB (1) GB1255153A (en)
IE (1) IE33558B1 (en)
ZA (1) ZA696593B (en)

Also Published As

Publication number Publication date
IE33558B1 (en) 1974-08-07
GB1255153A (en) 1971-12-01
ZA696593B (en) 1971-04-28
CH521342A (en) 1972-04-15
DE1949422A1 (en) 1970-04-09

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