- Liquid crystal compound having negative dielectric anisotropy, and liquid crystal composition
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A liquid crystal composition includes a liquid crystal compound having a formula (I), where R1 and R2 are independently selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C1-C10 alkoxyl, C2-C10 alkenyloxy, C1-C10 ether, C1-C10 aldehyde, C1-C10 ketone, and C1-C10 ester; A is selected from the group consisting of and X1, X2, X3 and X4 are independently selected from the group consisting of H, halogen group, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 and —OCH2F, at least one of X1, X2, X3 and X4 being halogen group, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 or —OCH2F.
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- Liquid crystalline phenylcyclohexene derivatives
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A phenylcyclohexene of the formula STR1 wherein n is 1 or 2, X is --H, --R, --OR, --OCOR, --OCOOR, --CF3 or --F, and when n is 1, X can also be STR2 R is alkyl of 1-8 C atoms and when two R groups are present they can be the same or different,
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- SYNTHESIS OF TRANS-4-ALKYL-1-PHENYLCYCLOHEXANES AND THEIR DERIVATIVES
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The alkylation of benzene by 1-alkanoyl-2-chlorocyclohexanes and 1-alkanoyl-1-cyclohexenes leads to the formation of cis- and trans-4-alkanoyl-1-phenylcyclohexanes, the yields of which increase with increase in the reaction temperature. trans-4-Alkyl-1-phenylcyclohexanes were obtained from 4-alkanoyl-1-phenylcyclohexanes and also from the products from the reaction of 4-alkylcyclohexanones with phenylmagnesium bromide.Some mesomorphous derivatives of these hydrocarbons were synthesized.
- Bezborodov, V. S.,Bubel', O. N.,Konovalov, V. A.,Ptashnikov, Yu. L.
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p. 1479 - 1483
(2007/10/02)
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