Patent US4391731A successfully refreshed from Google Patents.
US4391731A
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Hydrogenated naphthalenes
Assignee: F Hoffmann La Roche AG
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Filing: 1981-08-03
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Granted: 1983-07-05
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Expires: 2001-08-03
Abstract
Abstract Compounds of the formula ##STR1## wherein ring A is saturated or aromatic and a saturated ring A which may be present is trans-linked with the second ring; R 1 is a straight-chain alkyl or alkoxy group containing 1 to 11 carbon atoms; R 2 is cyano, a straight-chain alkyl group containing 1 to 11 carbon atoms, an ester group of the formula ##STR2## or, when ring A is saturated, additionally a straight-chain alkoxy group containing 1 to 11 carbon atoms; in the ester group of formula II ring B is either aromatic and X is oxygen or sulfur and R 3 is cyano or a straight-chain alkyl or alkoxy group containing 1 to 10 carbon atoms, or ring B is a trans-1,4-disubstituted cyclohexane ring and X is oxygen and R 3 is cyano or a straight-chain alkyl group containing 1 to 10 carbon atoms; and the total number of carbon atoms in the alkyl and/or alkoxy groups amounts to at most 12, are described. The compounds of formula I are useful in liquid crystal mixtures.
Inventors
- 👤 Arthur Boller
- 👤 Martin Schadt
- 👤 Alois Villiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:05
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K19/322; C07; C07C; C07C1/00; C07C1/20; C07C1/22; C07C13/00; C07C13/28; C07C13/32; C07C13/47; C07C13/48; C07C13/50; C07C327/00; C07C43/00; C07C43/02; C07C43/18; C07C43/20; C07C43/235; C07C45/00; C07C45/45; C07C45/46; C07C45/61; C07C45/62; C07C45/67; C07C45/68; C07C47/00; C07C47/38; C07C47/47; C07C49/00; C07C49/29; C07C49/313; C07C49/323; C07C49/76; C07C49/782; C07C49/792; C07C51/00; C07C51/347; C07C51/36; C07C61/00; C07C61/12; C07C61/125; C07C61/13; C07C61/15; C07C61/16; C07C61/28; C07C61/29; C07C63/00; C07C63/33; C07C63/49; C07C63/68; C07C63/72; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/033; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/28; C09K2019/326
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
120 words
A compound of the formula ##STR21## wherein ring A is saturated or aromatic and a saturated ring A which may be present is trans-linked with the second ring; R 1 is straight-chain alkyl or alkoxy group containing 1 to 11 carbon atoms; R 2 is cyano, an ester group of the formula ##STR22## wherein ring B is either aromatic, X is oxygen or sulfur and R 3 is cyano or straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, or ring B is trans-1,4-di-substituted cyclohexane, X is oxygen and R 3 is cyano or straight-chain alkyl containing 1 to 10 carbon atoms; and the total number of carbon atoms in the alkyl and/or alkoxy groups comprises at most 12.
Claim 2
Dependent Claim
120 words
A compound of the formula ##STR21## wherein ring A is saturated or aromatic and a saturated ring A which may be present is trans-linked with the second ring; R 1 is straight-chain alkyl or alkoxy group containing 1 to 11 carbon atoms; R 2 is cyano, an ester group of the formula ##STR22## wherein ring B is either aromatic, X is oxygen or sulfur and R 3 is cyano or straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, or ring B is trans-1,4-di-substituted cyclohexane, X is oxygen and R 3 is cyano or straight-chain alkyl containing 1 to 10 carbon atoms; and the total number of carbon atoms in the alkyl and/or alkoxy groups comprises at most 12.
Claim 3
Dependent Claim
12 words
A compound in accordance with claim 1, wherein ring A is saturated.
Claim 4
Dependent Claim
17 words
A compound in accordance with claim 2, wherein R 2 is an ester group of formula II.
Claim 5
Dependent Claim
19 words
A compound in accordance with claim 3, wherein ring B in the ester group of formula II is aromatic.
Claim 6
Dependent Claim
18 words
A compound in accordance with claim 4, wherein X in the ester group of formula II is oxygen.
Claim 7
Dependent Claim
22 words
A compound in accordance with claim 5, wherein R 3 in the ester group of formula II is cyano or straight-chain alkyl.
Claim 8
Dependent Claim
12 words
A compound in accordance with claim 2, wherein R 2 is cyano.
Claim 9
Dependent Claim
12 words
A compound in accordance with claim 1, wherein R 2 is cyano.
Claim 10
Dependent Claim
19 words
A compound in accordance with claim 1, 2, 3, 4, 5 or 7, wherein R 1 is straight-chain alkyl.
Claim 11
Dependent Claim
9 words
A compound, in accordance with claim 1, p-cyanophenyl 2-pentyl-1,2,3,4-tetrahydro-6-naphthoate.
Claim 12
Dependent Claim
9 words
A compound, in accordance with claim 1, p-ethoxy-phenyl 2-pentyl-1,2,3,4-tetrahydro-6-naphthoate.
Claim 13
Dependent Claim
11 words
A compound, in accordance with claim 1, 6-pentyl-trans-decalin-2-carboxylic acid p-cyanophenyl ester.
Claim 14
Dependent Claim
8 words
A compound, in accordance with claim 1, 6-pentyl-trans-decalin-2-carbonitrile.
Claim 15
Dependent Claim
8 words
A compound, in accordance with claim 1, 2-pentyl-1,2,3,4-tetrahydronaphthalene-6-carbonitrile.
Claim 16
Dependent Claim
166 words
A liquid crystal mixture containing at least two components, wherein at least one component is a compound of the formula ##STR23## wherein ring A is saturated or aromatic and a saturated ring A which may be present is trans-linked with the second ring; R 1 is straight-chain alkyl or alkoxy group containing 1 to 11 carbon atoms; R 2 is cyano, straight-chain alkyl containing 1 to 11 carbon atoms, an ester group of the formula ##STR24## or, when ring A is saturated, additionally a straight-chain alkoxy group containing 1 to 11 carbon atoms; in the ester group of formula II ring B is either aromatic, X is oxygen or sulfur and R 3 is cyano or straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, or ring B is trans-1,4-di-substituted cyclohexane, X is oxygen and R 3 is cyano or straight-chain alkyl containing 1 to 10 carbon atoms; and the total number of carbon atoms in the alkyl and/or alkoxy groups comprises at most 12.
Claim 17
Dependent Claim
166 words
A liquid crystal mixture containing at least two components, wherein at least one component is a compound of the formula ##STR23## wherein ring A is saturated or aromatic and a saturated ring A which may be present is trans-linked with the second ring; R 1 is straight-chain alkyl or alkoxy group containing 1 to 11 carbon atoms; R 2 is cyano, straight-chain alkyl containing 1 to 11 carbon atoms, an ester group of the formula ##STR24## or, when ring A is saturated, additionally a straight-chain alkoxy group containing 1 to 11 carbon atoms; in the ester group of formula II ring B is either aromatic, X is oxygen or sulfur and R 3 is cyano or straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, or ring B is trans-1,4-di-substituted cyclohexane, X is oxygen and R 3 is cyano or straight-chain alkyl containing 1 to 10 carbon atoms; and the total number of carbon atoms in the alkyl and/or alkoxy groups comprises at most 12.
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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |