ES2000877A6 - Mono:- or di:chloro-tri:fluoromethyl -pyridine cpds. prepn. - Google Patents
Mono:- or di:chloro-tri:fluoromethyl -pyridine cpds. prepn.Info
- Publication number
- ES2000877A6 ES2000877A6 ES8601278A ES8601278A ES2000877A6 ES 2000877 A6 ES2000877 A6 ES 2000877A6 ES 8601278 A ES8601278 A ES 8601278A ES 8601278 A ES8601278 A ES 8601278A ES 2000877 A6 ES2000877 A6 ES 2000877A6
- Authority
- ES
- Spain
- Prior art keywords
- mono
- prepn
- pref
- catalyst
- pyridine
- 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
Links
Abstract
Prepn. of a mono- or dichloro-(trifluoromethyl) pyridine cpd. (I) by contacting a mono- or dichloro-(trichloromethyl) pyridine cpd. (II) with HF in the presence of a metal halide catalyst in liq. phase is characterised by recovering (I) by distillation and using the distillation residue to catalyse further F for Cl exchange. - The catalyst is e.g. FeCl2, FeCl3, NbCl5, TaCl5, SbF3, FeF2, FeF3, SnF4, TiF4, CrF2, etc. pref. FeCl3. Amt. used is pref. 0.1-20 mole % based on (II). Metal halide/phosphorus halide combinations may also be used, the pref. phosphorus halide being PCl5. Catalysts bonded to inert supports or precursors forming the catalyst in situ may also be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8601278A ES2000877A6 (en) | 1986-08-22 | 1986-08-22 | Mono:- or di:chloro-tri:fluoromethyl -pyridine cpds. prepn. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8601278A ES2000877A6 (en) | 1986-08-22 | 1986-08-22 | Mono:- or di:chloro-tri:fluoromethyl -pyridine cpds. prepn. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2000877A6 true ES2000877A6 (en) | 1988-03-16 |
Family
ID=8247864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8601278A Expired ES2000877A6 (en) | 1986-08-22 | 1986-08-22 | Mono:- or di:chloro-tri:fluoromethyl -pyridine cpds. prepn. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2000877A6 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2147864A1 (en) | 2008-07-22 | 2010-01-27 | Aranguren Comercial del Embalaje SL | Bundling machine |
-
1986
- 1986-08-22 ES ES8601278A patent/ES2000877A6/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2147864A1 (en) | 2008-07-22 | 2010-01-27 | Aranguren Comercial del Embalaje SL | Bundling machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20001204 |