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US5248792A
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5-methyl-6-pentyl-tetrahydro-α-pyrone and analogs
Assignee: Givaudan Roure Corp
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Filing: 1992-05-13
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Granted: 1993-09-28
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Expires: 2012-05-13
Abstract
Abstract The invention concerns odorant and flavorant compositions which contain one or more compounds of the formula ##STR1## wherein R represents an alkyl group having from three to eight carbon atoms. The invention also concerns 5-methyl-6-pentyl-tetrahydro-α-pyrone (compound of formula I in which R represents pentyl) in the form of its cis-isomer, its trans-isomer or its cis/trans isomer mixture, and a process for its manufacture by a Bayer-Villiger oxidation of 2-pentyl-3-methyl-cyclopentan-1-one. As fields of use for these compounds there come into consideration, for example, perfume and flavoring compositions, foodstuffs, semi-luxury consumables and drinks.
Inventors
- 👤 Roman Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:17
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0069; C11B9/0073; C11B9/008; A; A23; A23L; A23L27/00; A23L27/20; A23L27/206; C07; C07D; C07D309/00; C07D309/16; C07D309/28; C07D309/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
3 words
Substantially pure 5-methyl-6-pentyl-tetrahydro-α-pyrone.
Claim 2
Dependent Claim
3 words
Substantially pure 5-methyl-6-pentyl-tetrahydro-α-pyrone.
Claim 3
Dependent Claim
3 words
Substantially pure cis-5-methyl-6-pentyl-tetrahydro-α-pyrone.
Claim 4
Dependent Claim
3 words
Substantially pure cis-5-methyl-6-pentyl-tetrahydro-α-pyrone.
Claim 5
Dependent Claim
1 words
trans-5-Methyl-6-pentyl-tetrahydro-α-pyrone.
Claim 6
Dependent Claim
1 words
trans-5-Methyl-6-pentyl-tetrahydro-α-pyrone.
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) | 1996-09-27 | 1997-03-29 | 1997-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-27 | 2001-03-29 | 2001-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-27 | 2005-03-29 | 2005-09-28 | $7700.00 | Window Closed / Lapsed |