Patent US4309539A successfully refreshed from Google Patents.
US4309539A
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Pyrimidine derivatives
Assignee: Rolic Technologies Ltd
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Filing: 1979-12-10
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Granted: 1982-01-05
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Expires: 1999-12-10
Abstract
Abstract Optically active pyrimidines of the formula <IMAGE> Ia and <IMAGE> Ib wherein Z is -(CH2)n- or -(CH2)n-O- wherein n is an integer of 1 to 4 and each of the symbols X is a nitrogen atom and each of the symbols Y is -CH- or each of the symbols Y is a nitrogen atom and each of the symbols X is -CH-, useful for electro-optical purposes, as well as liquid crystalline mixtures for electro-optical purposes containing compounds of the formula Ia and/or Ib, are described. The compounds of formulas Ia and Ib are useful for electro-optical purposes, for example, in electro-optical apparatuses.
Inventors
- 👤 Arthur Boller
- 👤 Marco Cereghetti
- 👤 Hanspeter Scherrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:02
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07C; C07C255/00; C07C45/00; C07C45/51; C07C45/511; C07C45/513; C07C45/515; C07C47/00; C07C47/20; C07C47/277; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3463
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
An optically active compound of the formula ##STR18## wherein Z is --(CH 2 ) n -- or --(CH 2 ) n --O--, wherein n is an integer of 1 to 4, and each of the symbols X is nitrogen and each of the symbols Y is --CH--, or each of the symbols Y is nitrogen and each of the symbols X is --CH--. or its (-) optical antipode.
Claim 2
Dependent Claim
68 words
An optically active compound of the formula ##STR18## wherein Z is --(CH 2 ) n -- or --(CH 2 ) n --O--, wherein n is an integer of 1 to 4, and each of the symbols X is nitrogen and each of the symbols Y is --CH--, or each of the symbols Y is nitrogen and each of the symbols X is --CH--. or its (-) optical antipode.
Claim 3
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-2"-methyl-1"-butylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 4
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-3"-methyl-1"-pentylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 5
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-4"-methyl-1"-hexylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 6
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-5"-methyl-1"-heptylphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 7
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-2"-methyl-"-butyloxyphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 8
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-3"-methyl-1"-pentyloxyphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 9
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-4"-methyl-1"-hexyloxyphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 10
Dependent Claim
13 words
A compound in accordance with claim 1, 5-[4'-(+)-5"-methyl-1"-heptyloxyphenyl]-2-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 11
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-2"-methyl-1"-butylphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 12
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-3"-methyl-1"-pentylphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 13
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-4"-methyl-1"-hexylphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 14
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-5"-methyl-1"-heptylphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 15
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-2"-methyl-1"-butyloxyphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 16
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-3"-methyl-1"-pentyloxyphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 17
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-4"-methyl-1"-hexyloxyphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
Claim 18
Dependent Claim
13 words
A compound in accordance with claim 1, 2-[4'-(+)-5"-methyl-1"-heptyloxyphenyl]-5-(4-cyanophenyl)-pyrimidine or its (-) optical antipode.
References Cited (Backward Citations)
US3997536A
Cited
US4062798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |