Patent ID: 7842845

Claim:
A ring compound of formula XIII: wherein one or two CH groups in the aromatic ring systems of formula XIII can each optionally be replaced by N; m and n, independently of one another, are identical or different and are each 0 or 1, and the sum (m+n) is 1 or 2, Y is a group of formula XIV wherein one or two CH groups in the aromatic ring systems can each optionally be replaced by N; X is —CH═CH— or —C≡C—; L, independently of one another, are identical or different and are R, F, Cl, Br, I, OH, OR, SH, SR, CN, NO 2 , NO, CHO, COOH, COOR, CONH 2 , CONHR, CONR 2 , CF 3 , NH 2 , NHR or NR 2 , wherein at least one L group is R; R is an alkyl, alkenyl or acyl group having from 1 to 12 carbon atoms or an aryl group having 6 carbon atoms, which is optionally substituted by an alkyl group having from 1 to 12 carbon atoms; a, b, c, and d, independently of one another, are identical or different and are 0, 1 or 2, and the sum (a+b+c+d) is 1 to 8, R 1 and R 2 , independently of one another, are identical or different and are H, F, Cl, CN, NCS, a straight-chain or branched, optionally chiral, alkyl radical or alkoxy radical having from 1 to 12 carbon atoms or an alkenyl radical or alkynyl radical having from 2 to 8 carbon atoms, in each of which, in addition, one CH 2 group may be replaced by —O—, —CO—, —O—CO—, —COO— or —CH═CH— in such a way that heteroatoms are not linked directly to one another and/or one or more H may be replaced by halogen, and in R 1 or R 2 , one CH 2 group can optionally be replaced by one of the following groups: a) trans-1,4-cyclohexylene, in which, in addition, one or more non-adjacent CH 2 groups may be replaced by —O— and/or —S—, b) a radical from the group consisting of 1,4-bicyclo[2.2.2]octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl, or c) 1,4-cyclohexenylene, and in which the radicals a), b) and c) are optionally substituted by CN, halogen, or combinations thereof.