Patent DE298770C successfully refreshed from Google Patents.
Patent EP0120575A1 successfully refreshed from Google Patents.
EP0120575A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Organic fluorine compounds
Assignee: Nippon Shokubai Co Ltd
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Filing: 1984-02-14
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Granted: —
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Expires: 2004-02-14
Abstract
Abstract Compounds such as pentafluorobenzonitrile, tetra- fluorophthalonitriles, and pentafluoropyridine are produced by halogen exchange with a chloro- or bromo-organic compound fluorinating agent such as an alkali metal fluoride using benzonitrile as a solvent as from 190° to 400°C.
Inventors
- 👤 Osamu Kaieda
- 👤 Masaru Awashima
- 👤 Isao Okitaka
- 👤 Toshiaki Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 09:30
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/84; C07B; C07B39/00; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C07C201/00; C07C201/06; C07C201/12; C07C253/00; C07C253/30; C07D213/61
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
A method of manufacturing an organic fluorine compound from an organic chloro- or bromo-compound by a halogen exchange reaction with a fluorinating agent characterized in that the method is carried out using benzonitrile as a solvent and at from 190° to 400°C.
Claim 2
Independent Claim
42 words
A method of manufacturing an organic fluorine compound from an organic chloro- or bromo-compound by a halogen exchange reaction with a fluorinating agent characterized in that the method is carried out using benzonitrile as a solvent and at from 190° to 400°C.
Claim 3
Dependent Claim
15 words
A method according to claim 1 characterized in that the chloro- or bromo-compound is aromatic.
Claim 4
Dependent Claim
26 words
A method according to claim 1 or claim 2 characterized in that the fluorinating agent is an alkali metal fluoride or an alkaline earth metal fluoride.
Claim 5
Dependent Claim
15 words
A method according to claim 3 characterized in that the fluorinating agent is potassium fluoride.
Claim 6
Independent Claim
34 words
A method according to any preceding claim characterized in that the chloro- or bromo-compound is used in an amount of from 5 to 50 parts by weight basedon 100 parts by weight of benzonitrile.
Claim 7
Independent Claim
39 words
A method according to any preceding claim characterized in that the fluorinating agent is an alkali metal fluoride in an amount of from 1 to 2 mols relative to the chlorine or bromine atoms in the organic compound treated.
Claim 8
Independent Claim
18 words
A method according to any preceding claim characterized in that it is carried out under spontaneously generated pressure.
Claim 9
Independent Claim
22 words
A method according to any preceding claim characterized in that it is carried out in the presence of a phase transfer catalyst.
Claim 10
Dependent Claim
31 words
A method according to claim 8 characterized in that the phase transfer catalyst is used in an amount of from 0.01 to 0.25 mol per mol of the organic compound treated.
References Cited (Backward Citations)
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