FR2419284A1 - PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION - Google Patents

PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION

Info

Publication number
FR2419284A1
FR2419284A1 FR7806374A FR7806374A FR2419284A1 FR 2419284 A1 FR2419284 A1 FR 2419284A1 FR 7806374 A FR7806374 A FR 7806374A FR 7806374 A FR7806374 A FR 7806374A FR 2419284 A1 FR2419284 A1 FR 2419284A1
Authority
FR
France
Prior art keywords
trichloropyridine
chlorination
preparing
chlorine
degrees
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.)
Withdrawn
Application number
FR7806374A
Other languages
French (fr)
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 FR7806374A priority Critical patent/FR2419284A1/en
Publication of FR2419284A1 publication Critical patent/FR2419284A1/en
Withdrawn legal-status Critical Current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
    • C07D213/60—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
    • C07D213/64—One oxygen atom attached in position 2 or 6
    • C07D213/643—2-Phenoxypyridines; Derivatives thereof
    • 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
    • C07D213/61—Halogen atoms or nitro radicals

Landscapes

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

Abstract

L'invention concerne l'industrie organique. Elle a pour objet un procédé de production de la 2,3,5-trichloropyridine, suivant lequel en fait réagir la 3,5-dichloro-pyridine avec du chlore en phase vapeur à une température élevée. La quantité de chlore est, de préférence, d'au moins 1 mole, plus avantageusement d'au moins 2 moles et le plus favorablement de 5 à 15 moles par mole de 3,5-dichloropyridine. La température de réaction est avantageusement de 300 à 460 degrés C et de préférence de 340 à 400 degrés C. La réaction peut être exécutée en présence d'un diluant qui est, de préférence, le tétrachlorure de carbone. La 2,3,5-trichloropyridine obtenue est préférée pour la préparation d'herbicides.The invention relates to the organic industry. It relates to a process for the production of 2,3,5-trichloropyridine, whereby 3,5-dichloro-pyridine reacts with chlorine in the vapor phase at an elevated temperature. The amount of chlorine is preferably at least 1 mole, more preferably at least 2 moles, and most favorably 5 to 15 moles per mole of 3,5-dichloropyridine. The reaction temperature is preferably 300 to 460 degrees C and more preferably 340 to 400 degrees C. The reaction can be carried out in the presence of a diluent which is preferably carbon tetrachloride. The 2,3,5-trichloropyridine obtained is preferred for the preparation of herbicides.

FR7806374A 1978-03-06 1978-03-06 PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION Withdrawn FR2419284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7806374A FR2419284A1 (en) 1978-03-06 1978-03-06 PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806374A FR2419284A1 (en) 1978-03-06 1978-03-06 PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION

Publications (1)

Publication Number Publication Date
FR2419284A1 true FR2419284A1 (en) 1979-10-05

Family

ID=9205394

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806374A Withdrawn FR2419284A1 (en) 1978-03-06 1978-03-06 PROCESS FOR PREPARING 2,3,5-TRICHLOROPYRIDINE OBTAINED BY CHLORINATION

Country Status (1)

Country Link
FR (1) FR2419284A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420833A (en) * 1967-09-08 1969-01-07 Dow Chemical Co Vapor phase production of polychlorinated compounds

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420833A (en) * 1967-09-08 1969-01-07 Dow Chemical Co Vapor phase production of polychlorinated compounds

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Legal Events

Date Code Title Description
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