Polymerizable compound, and liquid crystal composition and liquid crystal display element using same
A compound and carbon number technology, applied in liquid crystal materials, chemical instruments and methods, organic chemistry, etc., can solve problems such as large costs, achieve the effects of low risk, excellent preservation, and small contrast reduction
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Embodiment 1
[0686] Under a nitrogen atmosphere, 4-(4-pentylcyclohexyl)phenylboronic acid 29g, bromophenol 18g, potassium carbonate 22g, tetrakis(triphenylphosphine) 200 mg of palladium and 200 ml of ethanol were reacted at 80° C. for 5 hours. After the reaction, it was cooled, and 300 ml of ethyl acetate was added, the organic layer was washed with water and saturated brine, the solvent was distilled off, and recrystallized with toluene to obtain 27 g of the compound represented by (1).
[0687] [chemical 120]
[0688]
[0689]Next, under a nitrogen atmosphere, in a reaction vessel equipped with a stirring device, a dropping funnel, and a thermometer, 27 g of the above-mentioned compound (1), 10 g of pyridine, and 200 ml of methylene chloride were charged, cooled to below 10° C., and slowly added dropwise Trifluoromethanesulfonic anhydride 28g. After completion of the dropwise addition, the reaction container was returned to room temperature and reacted for 2 hours. After the reacti...
Embodiment 2
[0708] Under a nitrogen atmosphere, 29 g of 4-(4-pentylcyclohexyl) phenylboronic acid, 19 g of 4-bromo-2-fluorophenol, 22 g of potassium carbonate, and tetra (Triphenylphosphine)palladium 200mg, ethanol 200ml, react at 80°C for 5 hours. After the reaction, it was cooled, and 300 ml of ethyl acetate was added, the organic layer was washed with water and saturated brine, the solvent was distilled off, and recrystallized with toluene to obtain 27 g of the compound represented by (6).
[0709] [chem 126]
[0710]
[0711] Next, under a nitrogen atmosphere, in a reaction vessel equipped with a stirring device, a dropping funnel, and a thermometer, 27 g of the above-mentioned compound (6), 9.5 g of pyridine, and 200 ml of methylene chloride were charged, cooled to below 10° C., and slowly dropped Add 27 g of trifluoromethanesulfonic anhydride. After completion of the dropwise addition, the reaction container was returned to room temperature and reacted for 2 hours. After the r...
Embodiment 3
[0731] Under a nitrogen atmosphere, 32 g of 2-fluoro-4-(4-pentylcyclohexyl)phenylboronic acid, 17 g of 4-bromophenol, 22 g of potassium carbonate, tetra (Triphenylphosphine)palladium 200mg, ethanol 200ml, react at 80°C for 5 hours. After the reaction, it was cooled, and 300 ml of ethyl acetate was added, the organic layer was washed with water and saturated brine, the solvent was distilled off, and recrystallized with toluene to obtain 29 g of the compound represented by (11).
[0732] [chem 132]
[0733]
[0734] Next, under a nitrogen atmosphere, in a reaction vessel equipped with a stirring device, a dropping funnel and a thermometer, 27 g of the above-mentioned compound (6), 10 g of pyridine, and 200 ml of dichloromethane were charged, cooled to below 10° C., and slowly added dropwise Trifluoromethanesulfonic anhydride 29g. After completion of the dropwise addition, the reaction container was returned to room temperature and reacted for 2 hours. After the reaction, t...
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