177533-41-4Relevant academic research and scientific papers
Liquid crystal compound having negative dielectric anisotropy, and liquid crystal composition
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, (2015/11/10)
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.
4-(4-ALKYLCYCLOHEXYL)BENZALDEHYDE
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Page/Page column 10-11, (2009/02/10)
A process for effectively producing a 4-(4-alkylcyclohexyl)benzaldehyde, 4-(cyclohexyl)benzaldehyde, a 4-(trans-4-alkylcyclohexyl)benzaldehyde and a (trans-4-alkylcyclohexyl)benzene useful for electronic material applications such as liquid crystals and for pharmaceutical and agrochemical applications, etc., are disclosed. The present invention provides (1) a process for producing a 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde by formylating a (4-alkylcyclohexyl)benzene or cyclohexylbenzene with carbon monoxide, (2) a process for producing a 4-(trans-4-alkylcyclohexyl)benzaldehyde by formylating a (4-alkylcyclohexyl)benzene having a cis/trans molar ratio of 0.3 or less with carbon monoxide, and (3) a process for producing a (trans-4-alkylcyclohexyl)benzene by isomerizing a mixture of the cis and trans isomers of a (4-alkylcyclohexyl)benzene, all of the processes being performed in the presence of HF and BF3.
