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US4180682A
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US
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Unsaturated alcohols having an ether protected group
Assignee: Hoffmann La Roche Inc
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Filing: 1978-05-12
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Granted: 1979-12-25
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Expires: 1998-05-12
Abstract
Abstract A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.
Inventors
- 👤 Noal Cohen
- 👤 Gabriel Saucy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:09
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/29; C07C45/292; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/14; C07C45/44; C07C59/00; C07C59/01; C07C59/125; C07C59/40; C07C59/58; C07C59/64; C07C59/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
A compound of the formula: ##STR42## wherein R 2 is t-butyl, tetrahydropyranyl, benzyl, benzhydryl, trityl, methoxymethyl, dimethyl t-butylsilyl.
Claim 2
Dependent Claim
18 words
A compound of the formula: ##STR42## wherein R 2 is t-butyl, tetrahydropyranyl, benzyl, benzhydryl, trityl, methoxymethyl, dimethyl t-butylsilyl.
Claim 3
Dependent Claim
10 words
The compound of claim 1 wherein said compound is (2R,4R)-1-tert.-butoxy-2-methylhept-5-yn-4-ol.
Claim 4
Dependent Claim
11 words
The compound of claim 1 wherein said compound is rac. 1-benzyloxy-2-methylhept-5-yn-4-ol.
Claim 5
Dependent Claim
18 words
A compound of the formula: ##STR43## wherein R 2 is t-butyl, tetrahydropyranyl, benzyl, benzhydryl, trityl, methoxymethyl, dimethyl t-butylsilyl.
Claim 6
Dependent Claim
18 words
A compound of the formula: ##STR43## wherein R 2 is t-butyl, tetrahydropyranyl, benzyl, benzhydryl, trityl, methoxymethyl, dimethyl t-butylsilyl.
Claim 7
Dependent Claim
11 words
The compound of claim 4 wherein said compound is rac. E-1-benzyloxy-2-methyl-5-hepten-4-ol.
Claim 8
Dependent Claim
28 words
The compound of claim 4 wherein said compound has the formula: ##STR44## wherein R 2 is as above, and Δ denotes a cis configuration across the double bond.
Claim 9
Dependent Claim
28 words
The compound of claim 4 wherein said compound has the formula: ##STR45## wherein R 2 is as above; and Δ' denotes a trans configuration across the double bond.
References Cited (Backward Citations)
US3394169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |