US5213710A
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Benzene derivatives and a liquid-crystalline medium
Assignee: Merck Patent GmbH
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Filing: 1991-09-26
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Granted: 1993-05-25
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Expires: 2011-09-26
Abstract
Abstract The invention relates to novel benzene derivatives of the formula I <IMAGE> I in which n is 0, 1, 2, 3, 4, 5, 6 or 7, Q is -O-, -CH=CH- or a single bond, r is 0, 1, 2, 3, 4 or 5, s is 0, 1 or 2, X is F, Cl, OCHF2 or CF3, L is H or F, and A is <IMAGE> Z, Z-Ar, Ar-Z, Z-Cyc in which Z is a single bond, -(CH2)2- or -(CH2)4 -, Ar is 1,4-phenylene or biphenyl-4,4'-diyl and Cyc is trans-1,4-cyclohexylene.
Inventors
- 👤 Volker Reiffenrath
- 👤 Reinhard Hittich
- 👤 Herbert Plach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:38
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3098; C07; C07C; C07C25/00; C07C25/02; C07C25/13; C07C25/18; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/17; C07C43/174; C07C43/1747; C07C43/176; C07C43/178; C07C43/1788; C07C43/20; C07C43/21; C09K19/3001; C09K19/3003; C09K19/3028; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16; C09K2019/3021
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
99 words
A benzene compound of formula I ##STR118## wherein n is 0, 1, 2, 3, 4, 5, 6 or 7; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4, or 5; s is 0, 1 or 2, s being 1 or 2 if A is a single bond; X is F, Cl, OCHF 2 or CF 3 ; L is H; and A is Z, Z-Ar, Ar-Z, or Z-Cyc; Z is a single bond, --(CH 2 ) 2 -- or --(CH 2 ) 4 --; Ar is 1,4-phenylene or biphenyl-4,4'-diyl; and Cyc is trans-1,4-cyclohexylene.
Claim 2
Dependent Claim
99 words
A benzene compound of formula I ##STR118## wherein n is 0, 1, 2, 3, 4, 5, 6 or 7; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4, or 5; s is 0, 1 or 2, s being 1 or 2 if A is a single bond; X is F, Cl, OCHF 2 or CF 3 ; L is H; and A is Z, Z-Ar, Ar-Z, or Z-Cyc; Z is a single bond, --(CH 2 ) 2 -- or --(CH 2 ) 4 --; Ar is 1,4-phenylene or biphenyl-4,4'-diyl; and Cyc is trans-1,4-cyclohexylene.
Claim 3
Dependent Claim
38 words
A compound according to claim 1, wherein said compound is of formula Ia, ##STR119## wherein r is 2, 3, 4 or 5; s is 1 or 2; A is Z, Z-Ar, Ar-Z, or Z-Cyc; and L is H.
Claim 4
Dependent Claim
36 words
A compound according to claim 1, wherein said compound is of formula Ib ##STR120## wherein n is 1 to 7; s is 1 or 2; L is H; and A is Z, Z-Ar, Ar-Z, or Z-Cyc.
Claim 5
Dependent Claim
14 words
A compound according to claim 3, wherein s is 2 and A is Z.
Claim 6
Dependent Claim
14 words
A compound according to claim 3, wherein s is 1 and A is Ar.
Claim 7
Dependent Claim
12 words
A compound according to claim 4, wherein Z is a single bond.
Claim 8
Dependent Claim
14 words
A compound according to claim 4, wherein Z is --(CH 2 ) 2 --.
Claim 9
Dependent Claim
41 words
A compound according to claim 1, wherein said compound is of formula Ie ##STR121## wherein n is 1 to 7; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H.
Claim 10
Dependent Claim
41 words
A compound according to claim 1, wherein said compound is of formula If ##STR122## wherein n is 1 to 7; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H.
Claim 11
Dependent Claim
27 words
In a liquid-crystalline medium for electrooptical displays having at least two liquid-crystalline components, the improvement comprising at least one component is a compound according to claim 1.
Claim 12
Dependent Claim
22 words
In an electrooptical display device containing a liquid-crystal cell, the improvement comprising said liquid-crystal cell containing a medium according to claim 10.
Claim 13
Dependent Claim
27 words
In a method of generating an optical display using an electrooptical display device, the improvement wherein said electrooptical display device is a device according to claim 11.
Claim 14
Dependent Claim
40 words
A compound according to formula Ic ##STR123## wherein n is 1 to 7; s is 0, 1 or 2; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H.
Claim 15
Dependent Claim
40 words
A compound according to formula Ic ##STR123## wherein n is 1 to 7; s is 0, 1 or 2; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H.
Claim 16
Dependent Claim
60 words
A compound wherein said compound is of formula Ia, ##STR124## wherein r is 2, 3, 4 or 5; s is 1 or 2; A is Z, Z-Ar, Ar-Z, or Z-Cyc; L is H or F; Z is a single bond, --(CH 2 ) 2 -- or --(CH 2 ) 4 --; Ar is 1,4-phenylene or biphenyl-4,4'-diyl; and Cyc is trans-1,4-cyclohexylene.
Claim 17
Dependent Claim
60 words
A compound wherein said compound is of formula Ia, ##STR124## wherein r is 2, 3, 4 or 5; s is 1 or 2; A is Z, Z-Ar, Ar-Z, or Z-Cyc; L is H or F; Z is a single bond, --(CH 2 ) 2 -- or --(CH 2 ) 4 --; Ar is 1,4-phenylene or biphenyl-4,4'-diyl; and Cyc is trans-1,4-cyclohexylene.
Claim 18
Dependent Claim
26 words
A compound of formula Ib, ##STR125## wherein n is 1 to 7; L is H or F; s is 1; and A is 1,4-phenylene or biphenyl-4,4'-diyl.
Claim 19
Dependent Claim
26 words
A compound of formula Ib, ##STR125## wherein n is 1 to 7; L is H or F; s is 1; and A is 1,4-phenylene or biphenyl-4,4'-diyl.
Claim 20
Dependent Claim
28 words
A compound of formula Ib, ##STR126## wherein n is 1 to 7; s is 2; A is --(CH 2 ) 2 --; and L is H or F.
Claim 21
Dependent Claim
28 words
A compound of formula Ib, ##STR126## wherein n is 1 to 7; s is 2; A is --(CH 2 ) 2 --; and L is H or F.
Claim 22
Dependent Claim
41 words
A compound of formula Ic ##STR127## wherein n is 1 to 7; s is 0, 1 or 2; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H or F.
Claim 23
Dependent Claim
41 words
A compound of formula Ic ##STR127## wherein n is 1 to 7; s is 0, 1 or 2; Q is --O--, --CH═CH-- or a single bond; r is 0, 1, 2, 3, 4 or 5; and L is H or F.
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