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
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)
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)
| 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 |
| DE3070085D1 (en) * | 1979-11-30 | 1985-03-14 | Ciba Geigy Ag | Process for the preparation of 2,3,5,6-tetrachloropyridine and 3,5,6-trichloropyridin-2-ol |
| EP0030215A3 (fr) * | 1979-11-30 | 1981-10-07 | Ciba-Geigy Ag | 3,3,5-Trichloroglutarimide, procédé pour sa préparation et son utilisation pour la préparation de 2,3,5,6-tétrachloropyridine |
| 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 |
| WO2000003989A1 (fr) | 1998-07-15 | 2000-01-27 | Reilly Industries, Inc. | Dechloration de pyridines dans des milieux acides contenant du zinc |
| 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 |
-
1974
- 1974-05-16 US US05/470,473 patent/US3993654A/en not_active Expired - Lifetime
-
1976
- 1976-10-05 BE BE171255A patent/BE846959A/fr not_active IP Right Cessation
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 |