US4037037A
Expired / Lapsed
US
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Novel method of organic synthesis to form a polymer-bound active species
Assignee: Yeda Research and Development Co Ltd
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Filing: 1974-08-19
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Granted: 1977-07-19
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Expires: 1994-08-19
Abstract
Abstract The present invention relates to a novel process of organic synthesis which comprises forming active species from molecules chemically bound to a rigid insoluble polymer, reacting the active species so as to obtain the desired product, splitting this off the polymer, and recovering the desired product. The novel method of organic synthesis is applicable to a wide variety of chemical reactions, and the conditions of reaction will be chosen according to the desired products.
Inventors
- 👤 Avraham Patchornik
- 👤 Menahem A. Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:54
CPC Classifications
C; C08; C08F; C08F8/00; C07; C07C; C07C45/00; C07C45/51; C07C45/511; C07C45/513; C07C45/61; C07C45/67; C07C45/673; C07C45/676; C07C57/00; C07C57/30; C07C57/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A method of forming a stable enolate in an inert solvent which comprises covalently bonding a plurality of linking groups to an insoluble cross-linked polymer, covalently bonding an enolizable compound to at least one of said linking groups so as to provide at least one side chain of the enolizable compound covalently bound to the polymer network, and reacting the enolizable compound bound polymer with an enolizing agent in the presence of an inert solvent to provide at least one enolate covalently bound to the polymer network.
Claim 2
Independent Claim
87 words
A method of forming a stable enolate in an inert solvent which comprises covalently bonding a plurality of linking groups to an insoluble cross-linked polymer, covalently bonding an enolizable compound to at least one of said linking groups so as to provide at least one side chain of the enolizable compound covalently bound to the polymer network, and reacting the enolizable compound bound polymer with an enolizing agent in the presence of an inert solvent to provide at least one enolate covalently bound to the polymer network.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein a plurality of enolates are covalently bound to the polymer network at a distance from one another so as to prevent their interaction.
Claim 4
Dependent Claim
36 words
The method of claim 1 wherein at least one nonenolizable compound is covalently bound to at least one of said linking groups whereby a reaction between the enolate and the non-enolizable compound can subsequently be effected.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |