Compound, liquid crystal composition and liquid crystal display
A compound and representation-based technology, applied in the field of liquid crystal display, can solve problems such as affecting production line capacity, complex process, and organic pollutant emissions.
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[0042]The preparation method of the compound shown in the formula I of the present invention is not particularly limited. As one of the embodiments, a method of synthesizing, for example, the following synthetic route, but is not limited thereto:
[0043]plan 1:
[0044]
[0045]Scenario 2:
[0046]
[0047]Among them, G1, G2, L1, L00SP1SP2, R is the same as the definition of the above, and L represents a hydrogen atom, a methyl group, a trifluoromethyl, or the like, L 'represents L.1Or aromatic group.
[0048]The synthetic-based medium materials and reagents can be purchased by commercial approaches, such as principles, operation processes, conventional post-treatment, over silica gel columns, recrystallization purification, etc. are well known to those skilled in the art, which can be fully realized The process obtains the target product.
[0049]The reaction of all the steps of all the methods described above is carried out in a solvent, and the aforementioned solvent is selected from the group consi...
Embodiment 1
[0162]The compound structure formula is as shown in the following formula I1-1:
[0163]
[0164]step 1
[0165]
[0166]11.5 g (0.05 mol) 1-1 and 15.7 g (0.05 mol) of Compound 1- and 15.7 g (0.05 mol) were added to the reaction bottle, and the boronic acid-ravate is 12.7 g (0.05 mol), potassium carbonate 16.6 g (0.12 mol), PD (DPPF)2CL20.5 g, toluene 300ml and water 100ml. Under nitrogen protection, heated to reflux, and after 2 hours, the point plate detection raw material disappeared. Water and toluene were mixed with toluene, and the aqueous layer was extracted twice with toluene. After washing with water, the silica gel chromatography was washed with water, and the solvent was crystallized 3 times with toluene and ethanol, and the white solid 20.5 g, GC: 99.1%.
[0167]Step 2
[0168]
[0169]26.1 g (0.067 mol) 1-3, 12.6 g (0.143 mol) of methacrylic acid, 100 mL of dichloromethane was stirred at room temperature, and then stirred at room temperature for 4 hours. Point plate detection compound 1-3 d...
Embodiment 2
[0177]The compound structure formula is as shown in the following formula I1-1:
[0178]
[0179]step 1
[0180]
[0181]18.1 g (0.05 mol) of Compound 2-1 and 11.6 g (0.05 mol) of Compound 2-2, 1.7 g of boronic acid-ravate is 12.7 g (0.05 mol), potassium carbonate, PD, 6.6 g (0.12 mol), PD (DPPF)2CL20.5 g, toluene 300ml and water 100ml. Under nitrogen protection, heated to reflux, and after 2 hours, the point plate detection raw material disappeared. Water and toluene were mixed with toluene, and the aqueous layer was extracted twice with toluene. After washing with water, the silica gel chromatography was washed with water, and the solvent was crystallized 3 times with toluene and ethanol, and the white solid 20.5 g, GC: 99.1%.
[0182]Step 2
[0183]
[0184]29.2 g (0.067 mol) of 2-3, 12.6 g (0.143 mol) of methacrylic acid, 100 ml of dichloromethane was stirred at room temperature, and then stirred at room temperature for 4 hours. The point plate detection compound 2-3 disappears; add water and stirre...
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