Patent ID: 11964933
Assignee: MERCK PATENT GMBH
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C  G

Claim 0:
1. A compound of formula U, in which
RU denotes H, alkyl or alkoxy having 1 to 12 C atoms, or alkenyl,
alkenyloxy or alkoxyalkyl having 2 to 12 C atoms, in which one or more CH2—groups may be replaced by, , or a group RP,
RP denotes halogen, CN, NCS, RF, RF—O— or RF—S—, wherein
RF denotes fluorinated alkyl having 1 to 9 C atoms or fluorinated alkenyl having 2 to 9 C atoms,
ZU1, ZU2, ZU3 identically or differently, denote —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C≡C— or a single bond,
X1, X2 identically or differently, denote H, Cl, F, CH3 or C2H5,
Y1, Y2, Y3, Y4 identically or differently, denote H, F, Cl, or straight chain alkyl, or alkoxy, each having 1 to 12 C atoms or straight chain alkenyl or alkenyloxy, each having 2 to 12 C atoms or branched or cyclic alkyl, alkenyl, alkoxy or alkenyloxy, each having 3 to 12 C atoms, where at least one of Y1, Y2, Y3 and Y4 is different from F,
s is 0, 1 or 2,
t is 0, 1 or 2, and
s+t is 0, 1 or 2,, identically or differently, denote a radical selected from the following groups:

a) the group consisting of 1,4-phenylene, 1,4-naphthylene, and 2,6-naphthylene, in which one or two CH groups may be replaced by N and in which one or more H atoms may be replaced by L,
b) the group consisting of trans-1,4-cyclohexylene, 1,4-cyclohexenylene, bicyclo[1.1.1]pentane-1,3-diyl, 4,4″-bicyclohexylene, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, in which one or more non-adjacent CH2 groups may be replaced by —O— and/or —S— and in which one or more H atoms may be replaced by F, and
c) the group consisting of thiophene-2,5-diyl, thieno[3,2-b]thiophene-2,5-diyl, selenophene-2,5-diyl, each of which may also be mono- or polysubstituted by L,
L on each occurrence, identically or differently, denotes F, Cl, CN, SCN, SF5 or straight-chain, in each case optionally fluorinated, alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 1 to 12 C atoms or branched, in each case optionally fluorinated, alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy having 3 to 12 C atoms.