Patent ID: 7425356

Claim:
A chiral compound of formula I wherein X 1 , X 2 , Y 1 and Y 2 are independently of each other H; F; Cl; Br; I; CN; SCN; SF 5 ; straight chain or branched alkyl with 1 to 25 C atoms which may be unsubstituted, mono- or poly-substituted by F, Cl, Br, I or CN, one or more non-adjacent CH 2 groups optionally being replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —C(═O)—, —C(═O)O—, —OC(═O)—, —OC(═O)—O—, —S—C(═O)—, —C(═O)—S—, —CH═CH—or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another; a polymerizable group; or cycloalkyl or aryl group with 1 to 20 C atoms that is optionally mono- or polysubstituted by L or by a polymerizable group, R 0 is H or alkyl with 1 to 4 C atoms, x1 and x2 are independently of each other 0, 1 or 2, y1 and y2 are independently of each other 0, 1, 2, 3 or 4, B and C are independently of each other an aromatic or partially or fully saturated aliphatic six-membered ring, wherein one or more CH groups are optionally replaced by N and one or more CH 2 groups are optionally replaced by O and/or S, one of W 1 and W 2 is -Z 1 -A 1 -R, and the other is R 1 , provided that W 1 and W 2 are not both H at the same time, U 1 and U 2 are independently of each other CH 2 , O, S, C(═O) or C(═S), V 1 and V 2 are independently of each other (CH 2 ) n , n is an integer from 1 to 7, Z 1 is —O—, —S—, —C(═O)—, —C(═O)—O—, —OC(═O)—, —O—C(═O)O—, —C(═O)—NR 0 —, —NR 0 —C(═O)—, —OCH 2 —, —CH 2 O—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH 2 CH 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CH═N—, —N═CH—, —N═N—, —CH═CH—, —CF═CH —, —CH═CF—, —CF═CF—, —C≡C—, —CH═CH—C(═O)O—, —OC(═O)—CH═CH— or a single bond, A 1 is a single bond, R is: H; F; Cl; Br; I; CN; SCN; OH; SF 5 ; straight chain or branched alkyl with 1 to 25 C atoms which is unsubstituted, mono- or polysubstituted by F, Cl, Br, I or CN, one or more non-adjacent CH 2 groups optionally being replaced, in each case independently from one another, by —O—, —S—, —NH—, —NR 0 —, —C(═O)—, —C(═O)O—, —OC(═O)—, —OC(═O)—O—, —S—C(═O)—, —C(═O)—S—, —CH═CH— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and R 1 is: H, F and straight chain alkyl with 1 to 12 C atoms wherein one or more H atoms may be replaced with F or CN, and one or more non-adjacent CH 2 groups are optionally replaced, in each case independently from one another, by —O—, —S—, —NH—, —N(CH 3 )—, —CO—, —COO—, —OCO—, —OCO—O—, —S—CO—, —CO—S—, —CH═CH— or —C≡C—, in such a manner that oxygen atoms are not linked directly to one another.