US4587366A
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Process for preparing fluoroalkyl-substituted iodoalkanes
Assignee: Hoechst AG
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Filing: 1984-10-19
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Granted: 1986-05-06
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Expires: 2004-10-19
Abstract
Abstract A process is described for preparing fluoroalkyl-substituted iodoalkanes by reacting a fluorinated alkyl iodide with a substituted or unsubstituted alkene under heat in the presence of a catalyst. The catalyst is at least one metal which, in the periodic table of the elements, has one of the atomic numbers 24 to 30, 42 to 48 or 74 to 79 and is in finely divided form. The products of the process according to the invention are addition compounds of the fluorinated alkyl iodide with the substituted or unsubstituted alkene and, in known processes, can be used as useful intermediates for preparing fluorine-containing polymers, textile finishes, fire-extinguishing agents or surfactants.
Inventors
- 👤 Konrad von Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:43
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/275; C07C17/278
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
171 words
A process for preparing a monoaddition compound of the formula ##STR10## in which R f denotes a perfluorinated alkylene radical which is straight-chain and has 1 to 15 carbon atoms, which is branched and has 3 to 15 carbon atoms or which is cyclic and has 4 to 8 carbon atoms, X denotes hydrogen, fluorine, chlorine, bromine or iodine, and R 1 and R 2 are identical or different and each denotes: hydrogen, fluorine, chlorine, a perfluoroalkyl radical having 1 to 12 carbon atoms, a perfluoroalkyl radical having 1 to 10 carbon atoms and in which a fluorine atom is replaced by hydrogen or chlorine, an alkyl radical having 1 to 20 carbon atoms, an alkenyl radical having 2 to 20 carbon atoms, an aryl radical having 6 to 10 carbon atoms, an arylalkyl radical having 7 to 12 carbon atoms, or a substituent of the last four types substituted by flourine, chlorine, --OH or --OR', in which R' denotes an alkyl or alkylcarboxyl radical having 1 to 5 carbon atoms,
Claim 2
Dependent Claim
171 words
A process for preparing a monoaddition compound of the formula ##STR10## in which R f denotes a perfluorinated alkylene radical which is straight-chain and has 1 to 15 carbon atoms, which is branched and has 3 to 15 carbon atoms or which is cyclic and has 4 to 8 carbon atoms, X denotes hydrogen, fluorine, chlorine, bromine or iodine, and R 1 and R 2 are identical or different and each denotes: hydrogen, fluorine, chlorine, a perfluoroalkyl radical having 1 to 12 carbon atoms, a perfluoroalkyl radical having 1 to 10 carbon atoms and in which a fluorine atom is replaced by hydrogen or chlorine, an alkyl radical having 1 to 20 carbon atoms, an alkenyl radical having 2 to 20 carbon atoms, an aryl radical having 6 to 10 carbon atoms, an arylalkyl radical having 7 to 12 carbon atoms, or a substituent of the last four types substituted by flourine, chlorine, --OH or --OR', in which R' denotes an alkyl or alkylcarboxyl radical having 1 to 5 carbon atoms,
Claim 3
Dependent Claim
100 words
which comprises reacting a compound of the formula XR.sub.f I with a compound of the formula ##STR11## wherein X, R f , R 1 and R 2 are as defined above, under heat and under atmospheric pressure or superatmospheric pressure in the presence of 0.1 to 10 mol%, based on whichever of the two reacting compounds is used in the smaller number of moles, of at least one metal catalyst which, in the periodic table of the elements, has one of the atomic numbers 24 to 30, 42 to 48 or 74 to 79 and is in finely divided form.
Claim 4
Dependent Claim
100 words
which comprises reacting a compound of the formula XR.sub.f I with a compound of the formula ##STR11## wherein X, R f , R 1 and R 2 are as defined above, under heat and under atmospheric pressure or superatmospheric pressure in the presence of 0.1 to 10 mol%, based on whichever of the two reacting compounds is used in the smaller number of moles, of at least one metal catalyst which, in the periodic table of the elements, has one of the atomic numbers 24 to 30, 42 to 48 or 74 to 79 and is in finely divided form.
Claim 5
Dependent Claim
19 words
The process as claimed in claim 1, wherein the catalyst is chromium, manganese, nickel, ruthenium, rhodium, palladium or platinum.
Claim 6
Dependent Claim
20 words
The process as claimed in claim 1, wherein the catalyst metal is present on a finely divided, inert support material.
Claim 7
Dependent Claim
21 words
The process as claimed in claim 1, wherein the reaction is carried out at a temperature of 80° to 180° C.
Claim 8
Dependent Claim
21 words
The process as claimed in claim 1, wherein the reaction is carried out at a temperature of 100° to 150° C.
Claim 9
Dependent Claim
39 words
The process as claimed in claim 1, wherein water is added to the reaction mixture in an amount of 1 to 100 mol%, based on whichever of the two reacting compounds is used in the smaller number of moles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |