Stabilizers and liquid crystal compositions containing stabilizers
一种液晶组合物、稳定剂的技术，应用在液晶材料、仪器、有机化学等方向，能够解决材料不能满足使用条件等问题，达到优越可靠性、高清亮点、低粘度的效果
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Embodiment 1
[0107]
[0108] route:
[0109]
[0110] Operating procedures:
[0111] Add 4-cyclopentylcyclohexylphenol (95g, 0.389mol) and 500ml of petroleum ether into a 2L three-necked flask, stir for 5min, add 39g of concentrated sulfuric acid, heat up to 70°C (water bath), add dropwise tert-butanol (151g, 2.04mol ) and 100ml of petroleum ether mixture, add dropwise for 2 hours, control the temperature at 70-72°C, after dropping, keep warm for 4 hours; directly separate the liquid, remove the sulfuric acid, add 300ml of water, 1LEA, stir for 5min, separate the liquid, and spin the organic phase directly Dry, 1 times of petroleum ether, 3 times of ethanol was heated to dissolve the product, refrigerated for 6 hours, suction filtered, repeated crystallization 3 times to obtain 57g, GC: 99.88%, yield 40%.
Embodiment 2
[0113]
[0114] route:
[0115]
[0116] Add 4-(5'-cyclobutyltetrahydropyran)phenol (93g, 0.4mol) and 500ml of petroleum ether into a 2L three-necked flask, stir for 5min, add 39g of concentrated sulfuric acid, heat up to 70°C (water bath), dropwise add tert Mixture of butanol (151g, 2.04mol) and 100ml of petroleum ether, add dropwise for 2 hours, control the temperature at 70-72°C, after dropping, keep warm for 4 hours; directly separate the liquid, remove the sulfuric acid, add 300ml of water, 1L of ethyl acetate, Stir for 5 minutes, separate the liquid, spin the organic phase to dry directly, heat to dissolve the product with 1 times of petroleum ether and 3 times of ethanol, freeze in the refrigerator for 6 hours, suction filter, and repeat the crystallization 4 times to obtain 50 g, GC: 99.66%, yield 35%.
Embodiment 3
[0118]
[0119] route:
[0120]
[0121] Add 4-(5'-cyclopropyl-1',3'-dioxane)phenol (44g, 0.2mol) and 300ml of petroleum ether into a 1L three-necked flask, stir for 5min, add 20g of concentrated sulfuric acid, and heat up to 70°C (water bath), dropwise add tert-butanol (74g, 1mol) and 50ml petroleum ether mixture, dropwise time 2h, temperature control 70-72°C, after dropwise, keep warm for 4h; , 500mL ethyl acetate, stirred for 5min, separated, the organic phase was spin-dried directly, 1 times of petroleum ether, 3 times of ethanol was heated to dissolve the product, frozen in the refrigerator for 6 hours, suction filtered, repeated crystallization 4 times to obtain 33g, GC: 99.5% , yield 50%.
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