Spontaneous alignment aid for liquid crystal compositions
A liquid crystal composition, a self-initiated technology, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of high cost and achieve the effect of excellent preservation
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[0603] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to the examples.
Synthetic example 1
[0604] (Synthesis Example 1: Synthesis of 2-methacrylic acid=3-fluoro-4'-[11-(oxiran-2-ylmethoxy)undecyloxy]biphenyl-4-yl ester )
[0605] Into a reaction vessel equipped with a stirring device, a cooler, and a thermometer, 38 g (155 mmol) of 3-fluoro-4-benzyloxyphenylboronic acid, 30.5 g (150 mmol) of 4-bromo-2-fluorophenol were placed mol), 32 g (232 mmol) of potassium carbonate, 1.8 g of tetrakistriphenylphosphine palladium, 200 ml of tetrahydrofuran, and 100 ml of pure water, and reacted at 70° C. for 5 hours. After completion of the reaction, the mixture was cooled, and 10% hydrochloric acid was added, followed by extraction of the target product with ethyl acetate. The organic layer was washed with water and saturated brine, and the solvent was distilled off. Then, dispersion washing|cleaning was performed with toluene, and it refine|purified with an alumina column, and obtained the compound 39g represented by Formula (1).
[0606] [Chemical 85]
[0607]
[0608] Ne...
Synthetic example
[0620] (Synthesis example: 2-methacrylic acid=3',5'-difluoro-4'-[11-[(3-methyloxetan-3-yl)methoxy]undecyloxy Synthesis of yl]biphenyl-4-yl ester)
[0621] Into a reaction vessel equipped with a stirring device, a cooler, and a thermometer, 35 g (155 mmol) of 4-benzyloxyphenylboronic acid and 29.3 g (140 mmol) of 4-bromo-2,5-fluorophenol were charged , 32 g (232 mmol) of potassium carbonate, 1.8 g of tetrakistriphenylphosphine palladium, 200 ml of tetrahydrofuran, and 100 ml of pure water, and reacted at 70° C. for 5 hours. After completion of the reaction, the mixture was cooled, and 10% hydrochloric acid was added, followed by extraction of the target product with ethyl acetate. The organic layer was washed with water and saturated brine, and the solvent was distilled off. Then, dispersion washing|cleaning was performed with toluene, and it refine|purified with an alumina column, and obtained the compound 37g represented by Formula (5).
[0622] [Chemical 89]
[0623] ...
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