Optically-active aliphatic .beta.-halogen substituted carboxylic acid 4'-(4-alkoxybenzyloxy)biphenyl thioester compounds and process for the preparation thereof
AssigneeSamsung Electron Devices Co., Ltd.
InventorsYoungjae Chun, Junha Suh
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Abstract
The present invention provides novel optically-active aliphatic .beta.-halogen substituted carboxylic acid 4'-(4-alkoxybenzyloxy)biphenyl thioester compounds of the general formula: ##STR1## wherein R represents a straight-chained alkyl radical having C.sub.2 to C.sub.10 carbon atoms and X represents a halogen atom, and a process for the preparation thereof. The novel biphenyl thioester compounds provided according to the present invention are usable as a dopant or a base material for liquid crystal blending, thereby improving the properties of LCD.
Claims2
Smectic liquid crystal compounds of optically-active aliphatic .beta.-halogen substituted carboxylic acid 4'-(4-alkoxybenzyloxy)biphenyl thioester defined by the general formula:
- ##STR10## wherein R represents a straight-chained alkyl radical having C.sub.2 to C.sub.10 carbon atoms and X represents a halogen atom, said compounds having high spontaneous polarization.
Smectic liquid crystal compounds of optically-active aliphatic .beta.-halogen substituted carboxylic acid 4'-(4-alkoxybenzyloxy)biphenyl thioester defined by the general formula. ##STR11## wherein R represents a straight-chained alkyl radical having C.sub.2 to C.sub.10 carbon atoms and X represents a halogen atom, said compounds having high spontaneous polarization, said compound having a thioester as the joining group of the phenyl and biphenyl groups, two chiral carbons followed one after another, .alpha.-chiral carbon having a methyl group and .beta.-halogen substituted chiral carbon.
Dependencies are inferred from the claim text.