Abstract: The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I ?and at least one compound of the formula II ?and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I and one or more compounds selected from the group of the compounds of the formulae IA, IB and IC in which R1, R1A, R1B, R1C, X, XA, XB, b and L1-6, rings A and B have the meanings indicated in claim 1.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterised in that it comprises one or more compounds of the formula I and one or more compounds of the formula IA in which R1, R1A, X, XA, L1-7, A1, Z1 and n have the meanings indicated in Claim 1.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula I in which R11, R12, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.

Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, comprising one or more compounds of formula I wherein the parameters have the meanings given in the text. It also relates to the compounds as such and to mesogenic or liquid crystalline mixtures comprising these compounds.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: The invention relates to compounds of the formula (I), in which R1, R2, R3, R4, Y and A have the meanings indicated, and to processes for the preparation thereof and to the use thereof for the preparation of medicaments.

Abstract: The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterised in that it comprises one or more compounds of the formula I in which R1, X, L1, L2 and L3 have the meanings indicated in Claim 1.

Abstract: The invention relates to chiral compounds of formula I wherein X1, X2, X1, X2, x1, x2, y1, y2, B, C, U1, U2, V1, V2, W1 and W2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.

Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula I in which R11, R12, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: The invention relates to chiral compounds of formula (I) R1—X1-(A1-Z1)m-G-(Z2-A2)n-X2—R2, wherein R1, R2, X1, X2, A1, A2, Z1, Z2, G, m and n have the meaning given in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I).

Abstract: The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I and at least one compound of the formula II and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: The invention relates to chiral compounds of formula I wherein X1, X2, X1, X2, x1, x2, y1, y2, B, C, U1, U2, V1, V2, W1 and W2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.

Abstract: The invention relates to chiral compounds of formula I wherein X1,X2,X1,X2,x1,x2,y1,y2,B,C,U1,U2,V1,V2,W1 and W2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizade mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal display, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.

Abstract: The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I and at least one compound of the formula II and to the use thereof for electro-optical purposes, and to displays containing this medium.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, comprising one or more compounds of formula I wherein the parameters have the meanings given in the text. It also relates to the compounds as such and to mesogenic or liquid crystalline mixtures comprising these compounds.

Abstract: The present invention is related to compounds for use in liquid crystal media, liquid crystal media comprising said compounds, the use of said media in electro-optical devices, said electro-optical devices, and the use of said compounds in mesogenic media for use in electro-optical devices that may be operated in an optically isotropic state.