Patent ID: 7888519

Claim:
A compound of formula I wherein a, b, c, d and e are each, independently of one another, 0 or 1, and the sum of a+b+c+d+e is ≧1; W is —CH 2 —; R 11 is an alkyl radical having 1 to 15 carbon atoms optionally mono- or polysubstituted, identically or differently, by halogen or —CN, wherein optionally, one or more CH 2 groups in this radical may be replaced by —C≡C—, —CH═CH—, —S—, —C(O)—O— and/or —O—C(O)— in such a way that hetero atoms O and S are not linked directly to one another; R 12 is halogen, —CN, —NCS, aralkyl, O-aralkyl or an alkyl radical having from 1 to 15 carbon atoms optionally mono- or polysubstituted, identically or differently, by halogen or —CN, wherein optionally, one or more CH 2 groups in this radical may be replaced by —C≡C—, —CH═CH—, —O—, —S—, —C(O)—O— and/or —O—C(O)— in such a way that hetero atoms O and S are not linked directly to one another; Z 11 is a single bond, —CH 2 —, —CH 2 CH 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CH═CH— or —C≡C—; Z 12 is a single bond, —CH 2 —, —CH 2 CH 2 —, —CF 2 CH 2 —, —CH 2 CF 2 — or —CF 2 CF 2 —; Z 13 , Z 14 and Z 15 are each, independently of one another, a single bond, —CH 2 CH 2 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —CH═CH—, —C≡C—, —CH 2 O—, —CF 2 O—, —C(O)— or —C(O)—O—; A 11 and A 12 , independently of one another, are A 13 and A 14 , independently of one another, are A 15 is or A 15 -R 12 together are or Z 13 -[-A 13 -Z 14 -] c -[-A 14 -Z 15 -] d -[-A 15 -] e -R 12 is L 17 , L 18 and L 19 , independently of one another, are H or F; q is 0, 1, 2, 3 or 4; p is 0, 1, 2 or 3; and R 13 and R 14 , independently of one another, are an alkanyl radical having from 1 to 7 carbon atoms or together are an alkylene bridge having from 2 to 7 carbon atoms; with the provisos that: (a) if Z 13 is directly linked to R 12 to give —Z 13 —R 12 , then (i) Z 13 is not —CH 2 O— or —CF 2 O—, and (ii) if Z 13 is —C(═O)—O— or —C(═O)—, then R 12 is H, aralkyl, alkanyl or alkenyl; (b) if Z 14 is directly linked to R 12 to give —Z 14 —R 12 , then (i) Z 14 is not —CH 2 O— or —CF 2 O—, and (ii) if Z 14 is —C(═O)—O— or —C(═O)—, then R 12 is H, aralkyl, alkanyl or alkenyl; (c) if Z 15 is directly linked to R 12 to give —Z 15 —R 12 , then (i) Z 15 is not —CH 2 O— or —CF 2 O—, and (ii) if Z 15 is —C(═O)—O— or —C(═O)—, then R 12 is H, aralkyl, alkanyl or alkenyl; and (d) R 11 is not CH 3 if a and b are both simultaneously zero, Z 12 and Z 13 are each a single bond, and -[-A 13 -Z 14 -] c -[-A 14 -Z 15 -] d -[-A 15 -] e -R 12 is unsubstituted phenyl; wherein alkanyl is an unsaturated alkyl group which is optionally mono- or polysubstituted, identically or differently, by halogen or —CN.