US3783140A
Expired / Lapsed
US
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Introduction of organic groups into ethylenically unsaturated carboxylic acids using a group viii metal salt
Assignee: Hercules LLC
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Filing: 1971-11-10
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Granted: 1974-01-01
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Expires: 1991-11-10
Abstract
Abstract THE PROCESS INVOLVES THE INTRODUCTION OF AN ORGAIC GROUP INTO AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID. AS AN EXAMPLE, A MIXTURE OF PHENYLMERCURIC CHLORIDE LITHIUM PALLADIUM CHLORIDE AND ACRYLIC ACID IS FORMED IN ACETONITRILE AS SOLVENT. THIS RESULTS IN THE FORMATION OF AN UNSTABLE ADDUCT BETWEEN THE ACRYLIC ACID AND PHENYLPALLADIUM CHLORIDE. DECOMPOSITION OF THE ADDUCT BY MAINTAINING IT ABOVE ITS DECOMPOSITION TEMPERATURE PROVIDES CINNAMIC ACID AS THE PRODUCT.
Inventors
- 👤 R Heck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:13
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/10; C07F3/12; C07C; C07C255/00; C07C45/00; C07C45/51; C07C45/54; C07C45/61; C07C45/67; C07C45/68; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |