ES2101925T3 - Procedimiento para la preparacion de 1,3-difluoro-benceno. - Google Patents
Procedimiento para la preparacion de 1,3-difluoro-benceno.Info
- Publication number
- ES2101925T3 ES2101925T3 ES93118284T ES93118284T ES2101925T3 ES 2101925 T3 ES2101925 T3 ES 2101925T3 ES 93118284 T ES93118284 T ES 93118284T ES 93118284 T ES93118284 T ES 93118284T ES 2101925 T3 ES2101925 T3 ES 2101925T3
- Authority
- ES
- Spain
- Prior art keywords
- difluoro
- benzene
- procedure
- preparation
- difluorohalogenbenzol
- 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 - Lifetime
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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B39/00—Halogenation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
Abstract
PROCESO PARA LA ELABORACION DEL 1,3 NTE DESDOBLAMIENTO CATALITICO DE HALOGENOS DE UN 1,3 DIFLUOROHALOGENBENZOL, EN DONDE SE TRANSFORMA UN 1,3 DIFLUOROHALOGENBENZOL DE LA FORMULA (I) DONDE R1 HASTA R4 SIGNIFICAN H, CL O BR Y AL MENOS UNO DE LOS RESTOS R1 HASTA R4 ES CL O BR, EN PRESENCIA DE UN CATALIZADOR DE PALADIO Y DE UNA AMINA, EVENTUALMENTE EN PRESENCIA DE AGUA O UN DISOLVENTE ORGANICO INERTE CONTRA LOS PARTICIPANTES DE REACCION Y LAS CONDICIONES DE REACCION, CON HIDROGENO BAJO PRESION Y TEMPERATURAS DE APROXIMADAMENTE 70 HASTA 140 C.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4238864 | 1992-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2101925T3 true ES2101925T3 (es) | 1997-07-16 |
Family
ID=6473150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93118284T Expired - Lifetime ES2101925T3 (es) | 1992-11-18 | 1993-11-11 | Procedimiento para la preparacion de 1,3-difluoro-benceno. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5504264A (es) |
EP (1) | EP0598338B1 (es) |
JP (1) | JPH06228025A (es) |
CA (1) | CA2103303A1 (es) |
DE (1) | DE59305733D1 (es) |
ES (1) | ES2101925T3 (es) |
ZA (1) | ZA938576B (es) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5498807A (en) * | 1992-11-18 | 1996-03-12 | Hoechst Aktiengesellschaft | Process for the preparation of aromatic fluoro compounds |
DE4404343A1 (de) * | 1994-02-11 | 1995-08-17 | Hoechst Ag | Verfahren zur Herstellung von aromatischen Fluorverbindungen |
IL111277A0 (en) * | 1993-10-14 | 1994-12-29 | Univ Princeton | Process for decreasing chlorine content in chlorinated hydrocarbons |
DE59503559D1 (de) * | 1994-02-11 | 1998-10-22 | Clariant Gmbh | Verfahren zur Herstellung von aromatischen Fluorverbindungen |
JP3904823B2 (ja) | 2000-02-22 | 2007-04-11 | セントラル硝子株式会社 | 1,1,1−トリフルオロアセトンの製造方法 |
GB0112093D0 (en) * | 2001-05-18 | 2001-07-11 | Univ Belfast | Hydrogenation processes |
DE10249748A1 (de) | 2002-10-25 | 2004-05-06 | Clariant Gmbh | Verfahren zur Herstellung von 1,3-Dihalogen-substituierten Benzolderivaten |
CN116553997B (zh) * | 2023-07-10 | 2023-09-26 | 山东国邦药业有限公司 | 一种合成3,4,5-三氟溴苯的中间体1,2,3-三氟苯的合成方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2725405A (en) * | 1951-12-24 | 1955-11-29 | Dow Chemical Co | Selective reduction of chlorobromohydrocarbons |
JPH04224535A (ja) * | 1990-12-26 | 1992-08-13 | Ishihara Sangyo Kaisha Ltd | 1,3,5−トリフルオロベンゼンの製法 |
US5091580A (en) * | 1991-03-27 | 1992-02-25 | Dowelanco | Process for the preparation of 2,6-difluoroaniline |
JPH09177836A (ja) * | 1995-12-27 | 1997-07-11 | Ntn Corp | 一方向クラッチ |
-
1993
- 1993-11-11 EP EP93118284A patent/EP0598338B1/de not_active Expired - Lifetime
- 1993-11-11 DE DE59305733T patent/DE59305733D1/de not_active Expired - Fee Related
- 1993-11-11 ES ES93118284T patent/ES2101925T3/es not_active Expired - Lifetime
- 1993-11-15 JP JP5285201A patent/JPH06228025A/ja active Pending
- 1993-11-17 CA CA002103303A patent/CA2103303A1/en not_active Abandoned
- 1993-11-17 ZA ZA938576A patent/ZA938576B/xx unknown
-
1994
- 1994-12-20 US US08/360,190 patent/US5504264A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0598338A1 (de) | 1994-05-25 |
DE59305733D1 (de) | 1997-04-17 |
CA2103303A1 (en) | 1994-05-19 |
EP0598338B1 (de) | 1997-03-12 |
US5504264A (en) | 1996-04-02 |
JPH06228025A (ja) | 1994-08-16 |
ZA938576B (en) | 1995-01-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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