US2827481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of polyene aldehydes
Assignee: F Hoffmann La Roche AG
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Filing: 1956-07-02
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Granted: 1958-03-18
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Isler Otto
- 👤 Montavon Marc
- 👤 Ruegg Rudolf
- 👤 Zeller Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:43
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/06; C07C403/12; C07C403/10; C07C403/14; C07C45/00; C07C45/27; C07C45/29; C07C45/292; C07C45/61; C07C45/62; C07C45/64; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR THE MANUFACTURE OF A MEMBER OF THE GROUP CONSISTING OF 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN(1)-YL)-4-METHYL-HEXADIEN-(2,4)-AL-(1), 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXYLIDEN)-4-METHYL - HEXADIENE-(2,4)-AL-(1) AND 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN - (2) - YLIDEN)-4METHYL-HEXADIEN-(2,4)-AL-(1), RESPECTIVELY, WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROXY LOWER ALKANOYLOXY AND OXO RADICALS WHICH COMPRISES ACETALISING, RESPECTIVELY, WITH A LOWER ALKYL ORTHOFORMATE IN THE PRESENCE OF AN ACIDIC CONDENSING AGENT, A MEMBER OF THE GROUP CONSISTING OF 4-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN-(1)-YL)-2-METHYL-BUTEN - (2) - AL - (1), 4-(2,6,6TRIMETHYL-4-R-CYCLOHEXYLIDEN)-2-METHYL-BUTEN - (2) - AL(1) AND 4-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN-(2)-YLIDEN)-2METHYL-BUTEN-(2)-AL-(1), WHEREIN R HAS THE SAME SIGNIFICANCE SET FORTH ABOVE, CONDENSING THE RESULTING ACETAL AT 0*-50*C. WITH A VINYL-LOWER ALKYL ETHER IN THE PRESENCE OF AN ACIDIC CONDENSING AGENT AND TREATING THE ETHERACETAL THUS OBTAINED WITH AN ACIDIC AGENT TO HYDROLYZE AND SPLIT OFF ALCOHOL FROM THE 2,3-POSITION.
Claim 2
Dependent Claim
125 words
A PROCESS FOR THE MANUFACTURE OF A MEMBER OF THE GROUP CONSISTING OF 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN(1)-YL)-4-METHYL-HEXADIEN-(2,4)-AL-(1), 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXYLIDEN)-4-METHYL - HEXADIENE-(2,4)-AL-(1) AND 6-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN - (2) - YLIDEN)-4METHYL-HEXADIEN-(2,4)-AL-(1), RESPECTIVELY, WHEREIN R REPRESENTS A MEMBER OF THE GROUP CONSISTING OF HYDROXY LOWER ALKANOYLOXY AND OXO RADICALS WHICH COMPRISES ACETALISING, RESPECTIVELY, WITH A LOWER ALKYL ORTHOFORMATE IN THE PRESENCE OF AN ACIDIC CONDENSING AGENT, A MEMBER OF THE GROUP CONSISTING OF 4-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN-(1)-YL)-2-METHYL-BUTEN - (2) - AL - (1), 4-(2,6,6TRIMETHYL-4-R-CYCLOHEXYLIDEN)-2-METHYL-BUTEN - (2) - AL(1) AND 4-(2,6,6-TRIMETHYL-4-R-CYCLOHEXEN-(2)-YLIDEN)-2METHYL-BUTEN-(2)-AL-(1), WHEREIN R HAS THE SAME SIGNIFICANCE SET FORTH ABOVE, CONDENSING THE RESULTING ACETAL AT 0*-50*C. WITH A VINYL-LOWER ALKYL ETHER IN THE PRESENCE OF AN ACIDIC CONDENSING AGENT AND TREATING THE ETHERACETAL THUS OBTAINED WITH AN ACIDIC AGENT TO HYDROLYZE AND SPLIT OFF ALCOHOL FROM THE 2,3-POSITION.
References Cited (Backward Citations)
US2671112A
Cited
US2730549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |