Patent ID: 7060331

Claim:
A chiral compound of formula I R 1 —X 1 -A 1 -(Z-A 2 ) m -X 2 —R 2 I wherein R 1 and R 2 are independently of each other: F, Cl, Br, CN, SCN, or SF 5, a chiral or achiral straight chain or branched alkyl group with 1 to 30 C atoms which is unsubstituted, or mono- or polysubstituted by F, Cl, Br or CN, optionally one or more non-adjacent CH 2 groups being 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, a chiral group comprising one or more aromatic or aliphatic rings that optionally includes fused or spirocyclic systems and optionally contains one or more hetero atoms, or a polymerizable group, X 1 and X 2 are independently from each other —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CF═CH—, —CH═CF—, —CF═CF— or a single bond, Z is in each case independently —O—, —S—, —CO—, —COO—, —OCO—, —O—, —COO—, —CO—N(R 3 )—, —N(R 3 )—CO—, —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═CH—, —CF═CH—, —CH═CF—, —CF═CF—, —C≡C—, —CH═CH—COO—, —OCO—CH═CH— or a single bond, R 3 is H or alkyl with 1 to 4 C atoms, A 1 and A 2 are in each case independently from one another: 1,4-phenylene in which one or more CH groups are optionally replaced by N; 1,4-cyclohexylene in which one or two non-adjacent CH 2 groups are optionally replaced by O and/or S; 1,3-dioxolane-4,5-diyl; 1,4-cyclohexenylene; 1,4-bicyclo-(2,2,2)-octylene; piperidine-1,4-diyl; naphthalene-2,6-diyl; decahydronaphthalene-2,6-diyl; 1,2,3,4-tetrahydronaphthalene-2,6-diyl; or indane-2,5-diyl; optionally, all these groups being unsubstituted, or mono- or polysubstituted with halogen, cyano or nitro groups or alkyl, alkoxy, alkylcarbonyl or alkoxycarbonyl groups with 1 to 7 C atoms, wherein one or more H atoms are optionally substituted by F or Cl, and m is 1, 2, 3, 4 or 5, provided that: a) at least one of X 1 and X 2 is —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CF═CH—, —CH═CF— or —CF═CF—, and/or Z is —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, and b) at least one of R 1 and R 2 is a chiral group, and c) if R 1 is a chiral fluorinated alkyl then X 1 is not —CF 2 O—, or if R 2 is a chiral fluorinated alkyl then X 2 is not —OCF 2 —.