US3268589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 4-(2-butenylidene)-3, 5, 5-trimethyl-2-cyclohexene-1-one
Assignee: RJ Reynolds Tobacco Co
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Filing: 1964-12-08
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Granted: 1966-08-23
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Expires: 1984-12-08
Abstract
No abstract record available.
Inventors
- 👤 Rowland Ralph Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:11
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/06; C07C403/08; A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/34; C07C403/02; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS OF PREPARING THE COMPOUND 4-(BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CYCLOHEXEN-1-ONE WHICH COMPRISES CONTACTING DEHYDROIONONE UNDER REDUCING CONDITTIONS WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM ALLUNIUM HYDRIDE AND SODIUM BOROHYDRIDE TO FORM DEHYDROIONOL, CONTACTING THE SO-FORMED DEHYDROIONOL WITH A DILUTE MINERAL ACID TO CONVERT THE DEHYDROIONAL TO 4-(2-BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CLYCLOHEXEN1-OL AND THEN CONTACTING THE SAID 4-(-2-BUTENYLIDENE)-3,5,5TRIMETHYL-2-CYCLOHEXEN-1-OL WITH AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF CHROMIC OXIDE IN PYRIDINE ANDMANGANESE DIOXIDE TO FORM 4-(2-BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CYCLOHEXEN-1-ONE.
Claim 2
Dependent Claim
73 words
A PROCESS OF PREPARING THE COMPOUND 4-(BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CYCLOHEXEN-1-ONE WHICH COMPRISES CONTACTING DEHYDROIONONE UNDER REDUCING CONDITTIONS WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM ALLUNIUM HYDRIDE AND SODIUM BOROHYDRIDE TO FORM DEHYDROIONOL, CONTACTING THE SO-FORMED DEHYDROIONOL WITH A DILUTE MINERAL ACID TO CONVERT THE DEHYDROIONAL TO 4-(2-BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CLYCLOHEXEN1-OL AND THEN CONTACTING THE SAID 4-(-2-BUTENYLIDENE)-3,5,5TRIMETHYL-2-CYCLOHEXEN-1-OL WITH AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF CHROMIC OXIDE IN PYRIDINE ANDMANGANESE DIOXIDE TO FORM 4-(2-BUTENYLIDENE)-3,5,5-TRIMETHYL-2-CYCLOHEXEN-1-ONE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |