US5064569A
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Optically active compounds
Assignee: Hoechst AG
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Filing: 1989-12-07
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Granted: 1991-11-12
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Expires: 2009-12-07
Abstract
Abstract Optically active compounds of the formula I can be used as components of chiral titled smectic liquid crystal phases: R.sup.1 --C*HX--Q--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --X'--Q'--C*HY'--R 5 (I) wherein R 1 --C*HX--Q-- and --X'--Q'--C*HY--R 5 are identical optically active radicals selected from the group --O--C*HCH 3 --COO--n--alkyl, --O--C*HCH 3 --CH 2 --O--n--alkyl, --OCO--C*HC1--CHCH 3 --CH 3 , --OCO--C*HCl--C*HCH 3 --C 2 H 5 , --OCO--C*HCl--CH 2 --CHCH 3 --CH 3 , --OCO--C*HCl--C(CH 3 ) 3 , --COO--C*HCH 3 -COO--n--alkyl, --O--CO--C*HCH 3 --o--n--alkyl, --OCH 2 --C*HCH 3 --O--n--alkyl, --COO--C*HCH 3 CH 2 --O--n--allyl, --OC*HCH 3 --CH 2 --COO--n--alkyl, --COO--C*HCH 3 --CH 2 --COO--n--alkyl, --OCH 2 --C*HCH 3 --COO--n--alkyl or --COO--CH 2 --C*HCH 3 --COO--n--alkyl, alkyl is of 1--12 c atoms, and --A 4 --Z 1 --A 2 --(Z 2 --A 3 ) n -- is a group of the following formulae or a mirror image thereof: ##STR1##
Inventors
- 👤 Thomas Geelhaar
- 👤 Andreas Wachtler
- 👤 Bernhard Scheuble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:26
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07C; C07C255/00; C07C43/00; C07C43/02; C07C43/18; C07C43/188; C07C43/20; C07C43/225; C07D213/54; C07D213/55; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D319/00; C07D319/04; C07D319/06; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/126; C09K19/20; C09K19/2007; C09K19/2021; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3028; C09K19/3066; C09K19/3068; C09K19/34; C09K19/3402; C09K19/3441; C09K19/3444; C09K19/345; C09K19/3452; C09K19/3458; C09K19/3463; C09K19/42; C09K2019/3422
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
Optically active compounds of the formula I R.sup.1 --C*HX--Q--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --X'--Q'--C*HY'--R.sup.5 (I) wherein R 1 --C*HX--Q-- and --X'--Q'--C*HY--R 5 are identical optically active radicals selected from the group --O--C*HCH 3 --COO--n-- alkyl, --O--C*HCH 3 --CH 2 --O--n--alkyl, --COO--C*HCH 3 --COO--n--alkyl, --O--CO--C*HCH 3 --O--n--alkyl, --OCH 2 --C*HCH 3 --O--n--alkyl, --COO--C*HCH 3 --CH 2 --O--n--alkyl, --OC*HCH 3 --CH 2 --COO--n--alkyl, --COO--C*HCH 3 --CH 2 --COO--n--alkyl, --OCH 2 --C*HCH 3 --COO--n--alkyl or --COO--CH 2 --C*HCH 3 --COO--n--alkyl, alkyl is of 1-12 C atoms, and --A 4 --Z 1 --A 2 --(Z 2 --A 3 ) n -- is a group of the following formulae. ##STR11##
Claim 2
Dependent Claim
105 words
Optically active compounds of the formula I R.sup.1 --C*HX--Q--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --X'--Q'--C*HY'--R.sup.5 (I) wherein R 1 --C*HX--Q-- and --X'--Q'--C*HY--R 5 are identical optically active radicals selected from the group --O--C*HCH 3 --COO--n-- alkyl, --O--C*HCH 3 --CH 2 --O--n--alkyl, --COO--C*HCH 3 --COO--n--alkyl, --O--CO--C*HCH 3 --O--n--alkyl, --OCH 2 --C*HCH 3 --O--n--alkyl, --COO--C*HCH 3 --CH 2 --O--n--alkyl, --OC*HCH 3 --CH 2 --COO--n--alkyl, --COO--C*HCH 3 --CH 2 --COO--n--alkyl, --OCH 2 --C*HCH 3 --COO--n--alkyl or --COO--CH 2 --C*HCH 3 --COO--n--alkyl, alkyl is of 1-12 C atoms, and --A 4 --Z 1 --A 2 --(Z 2 --A 3 ) n -- is a group of the following formulae. ##STR11##
Claim 3
Dependent Claim
71 words
An optically active compound according to claim 1, of the formula C.sub.3 H.sub.7 --OOC--C*HCH.sub.3 --O--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --OC*HCH.sub.3 --COO--C.sub.3 H.sub.7, C.sub.3 H.sub.7 --O--CH.sub.2 --C*HCH.sub.3 --O--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --OC*HCH.sub.3 --CH.sub.2 O--C.sub.3 H.sub.7, C.sub.2 H.sub.5 --OOC--C*HCH.sub.3 --OOC--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --COO--C*CHCH.sub.3 --COO--C.sub.2 H.sub.5, C.sub.2 H.sub.5 --O--C*HCH.sub.3 --COO--A.sup.4 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --OOC--C*HCH.sub.3 --O--C.sub.2 H.sub.5, or C.sub.2 H.sub.5 --O--C*HCH.sub.3 --CH.sub.2 --O--A.sup.4 --A.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --O--CH.sub.2 --C*HCH.sub.3 --O--C.sub.2 H.sub.5.
Claim 4
Dependent Claim
15 words
An optically active compound according to claim 1, which is 4,4'-bis-(α-pentyloxypropanoyloxy)-biphenyl, 4,4'-bis-(α-butyloxypropanoyloxy)-biphenyl, 4,4'-bis-(α-propyloxypropanoyloxy)-biphenyl, or 4,4'-bis-(α-ethyloxypropanoyloxy)-biphenyl.
Claim 5
Dependent Claim
29 words
A chiral tilted smectic liquid crystal phase with at least two liquid crystal components, containing at least one optically active compound of the formula I according to claim 1.
Claim 6
Dependent Claim
18 words
Electrooptical display element comprising a liquid crystal dielectric, wherein a phase according to claim 4 is the dielectric.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |