BE846959A - Procede de production de tetrachloropyridine, - Google Patents

Procede de production de tetrachloropyridine,

Info

Publication number
BE846959A
BE846959A BE171255A BE171255A BE846959A BE 846959 A BE846959 A BE 846959A BE 171255 A BE171255 A BE 171255A BE 171255 A BE171255 A BE 171255A BE 846959 A BE846959 A BE 846959A
Authority
BE
Belgium
Prior art keywords
tetrachloropyridine
production process
production
tetrachloropyridine production
Prior art date
Application number
BE171255A
Other languages
English (en)
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 filed Critical
Publication of BE846959A publication Critical patent/BE846959A/fr

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
    • C07D213/61—Halogen atoms or nitro radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE171255A 1974-05-16 1976-10-05 Procede de production de tetrachloropyridine, BE846959A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/470,473 US3993654A (en) 1974-05-16 1974-05-16 Preparation of tetrachloropyridine

Publications (1)

Publication Number Publication Date
BE846959A true BE846959A (fr) 1977-04-05

Family

ID=23867759

Family Applications (1)

Application Number Title Priority Date Filing Date
BE171255A BE846959A (fr) 1974-05-16 1976-10-05 Procede de production de tetrachloropyridine,

Country Status (2)

Country Link
US (1) US3993654A (fr)
BE (1) BE846959A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111938A (en) * 1977-09-14 1978-09-05 The Dow Chemical Company Preparation of 2,3,5-trichloropyridine
EP0022885B1 (fr) * 1979-07-20 1984-03-28 The Dow Chemical Company Procédé pour la récupération de la 2,3,5,6-tétrachloropyridine à partir de mélanges de pyridines chlorées
US4259495A (en) * 1979-09-10 1981-03-31 Ciba-Geigy Corporation Process for producing 2,3,5,6-tetrachloropyridine
EP0030214B1 (fr) * 1979-11-30 1985-01-30 Ciba-Geigy Ag Procédé de préparation de 2,3,5,6-tétrachloro-pyridine et de 3,5,6-trichloro-pyridin-2-ol
US4360676A (en) * 1979-11-30 1982-11-23 Ciba-Geigy Corporation 3,3,5-Trichloroglutaric acid imide
US4322538A (en) * 1981-04-20 1982-03-30 The Dow Chemical Company Preparation of symmetrical tetrachloropyridine
US4329474A (en) * 1981-04-20 1982-05-11 The Dow Chemical Company Selective solvent extraction of symmetrical tetrachloropyridine
US4783536A (en) * 1985-02-07 1988-11-08 The Dow Chemical Company Selective reduction of pentachloropyridine to 2,3,5,6-tetrachloropyridine with zinc dust in basic media
US4659835A (en) * 1986-01-03 1987-04-21 The Dow Chemical Company Preparation of tetrachloropyridine
US4703123A (en) * 1986-09-19 1987-10-27 The Dow Chemical Company Process for producing 2,3,5,6-tetrachloropyridine
JPS6471844A (en) * 1987-09-14 1989-03-16 Sds Biotech Kk 2,4,5-trifluoroisophthalonitrile and production thereof
AU4996299A (en) 1998-07-15 2000-02-07 Reilly Industries, Inc. Dechlorination of pyridines in acidic, zinc-containing mediums
GB9916809D0 (en) * 1999-07-16 1999-09-22 Zeneca Ltd Chemical process
CN110229095A (zh) * 2019-07-16 2019-09-13 潍坊新绿化工有限公司 一种2,3,5,6-四氯吡啶合成及分离方法

Also Published As

Publication number Publication date
US3993654A (en) 1976-11-23

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: THE DOW CHEMICAL CY

Effective date: 19911031