Patent US4785126A successfully refreshed from Google Patents.
US4785126A
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1,4-O-metallation process and composition
Assignee: EIDP Inc
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Filing: 1985-04-26
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Granted: 1988-11-15
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Expires: 2005-04-26
Abstract
Abstract This invention resides in a process for production of predominantly a 1,4-O-metallation product of a hydride of silicon, germanium, or tin with an alpha , beta -unsaturated carbonyl compound. The reaction involved takes place in the presence of a heterogeneous noncomplexed rhodium-containing catalyst. This invention also resides in 1,4-O-metallation compositions having perfluoroalkyl R groups on either side of the C=C bond of an enol ether or on the acetal side of the C=C bond of a ketene acetal.
Inventors
- 👤 Salvatore A. Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:07
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A composition of the formula ##STR26## wherein M represents silicon, germanium or tin and R 3 represents a perfluoroalkyl group and R and R 1 are selected individually from the group consisting of hydrogen and alkyl, aryl, cycloalkyl and mixed alkyl-aryl radicals containing 1 to 20 carbon atoms, R 2 is selected from the group consisting of branched or straight chain alkyl radicals having 1 to 20 carbon atoms, fluoroalkyl, aryl, benzyl, cycloalkyl, substituted aminoalkyl, alkoxyalkyl, polyalkoxyalkyl, and phenoxyalkyl radicals; and R 4 is selected individually from the group consisting of hydrogen, halogens, and branched or straight chain alkyl, aryl, alkoxy, and benzyl radicals having from 1 to 20 carbon atoms.
Claim 2
Dependent Claim
111 words
A composition of the formula ##STR26## wherein M represents silicon, germanium or tin and R 3 represents a perfluoroalkyl group and R and R 1 are selected individually from the group consisting of hydrogen and alkyl, aryl, cycloalkyl and mixed alkyl-aryl radicals containing 1 to 20 carbon atoms, R 2 is selected from the group consisting of branched or straight chain alkyl radicals having 1 to 20 carbon atoms, fluoroalkyl, aryl, benzyl, cycloalkyl, substituted aminoalkyl, alkoxyalkyl, polyalkoxyalkyl, and phenoxyalkyl radicals; and R 4 is selected individually from the group consisting of hydrogen, halogens, and branched or straight chain alkyl, aryl, alkoxy, and benzyl radicals having from 1 to 20 carbon atoms.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein M is silicon.
Claim 4
Dependent Claim
82 words
A composition of the formula ##STR27## wherein M represents silicon, germanium or tin and R 2 and R 3 represents a perfluoroalkyl group and R and R 1 are selected individually from the group consisting of hydrogen and alkyl, aryl, cycloalkyl and mixed alkyl-aryl radicals containing 1 to 20 carbon atoms; and R 4 is selected individually from the group consisting of hydrogen, halogens, and branched or straight chain alkyl, aryl, alkoxy, and benzyl radicals having from 1 to 20 carbon atoms.
Claim 5
Dependent Claim
82 words
A composition of the formula ##STR27## wherein M represents silicon, germanium or tin and R 2 and R 3 represents a perfluoroalkyl group and R and R 1 are selected individually from the group consisting of hydrogen and alkyl, aryl, cycloalkyl and mixed alkyl-aryl radicals containing 1 to 20 carbon atoms; and R 4 is selected individually from the group consisting of hydrogen, halogens, and branched or straight chain alkyl, aryl, alkoxy, and benzyl radicals having from 1 to 20 carbon atoms.
Claim 6
Dependent Claim
19 words
The composition of claim 3 wherein either R 2 or R 3 but not both represent a perfluoroalkyl group.
Claim 7
Dependent Claim
9 words
The composition of claim 3 wherein M is silicon.
Claim 8
Dependent Claim
9 words
The composition of claim 4 wherein M is silicon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |