- New entry for fluorinated carbocycles: Unprecedented 3,6-disubstituted 1,1,2,2-tetrafluorocyclohexane derivatives
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The synthetic protocols for symmetrical/unsymmetrical 3,6-disubstituted 1,1,2,2-tetrafluorocyclohexane molecules were successfully established for the first time. Some of thus obtained tetrafluorinated cyclohexanes underwent recrystallization to afford trans-configured products preferentially. One of the unsymmetrical trans-disubstituted tetrafluorocyclohexanes, trans-1-ethyl-2,2,3,3-tetrafluoro-4-[4-(trans-4-n-propylcyclohex-1-yl)phenyl]cyclohexane, was found to possess a low birefringence Δn (0.073) and a large negative dielectric anisotropy Δε (–9.4) in a binary mixture system, which were very prominent as characteristics of LC molecules in VA-mode driving LC displays.
- Yamada, Shigeyuki,Hashishita, Shohei,Konishi, Hideaki,Nishi, Yuji,Kubota, Toshio,Asai, Tomoyuki,Ishihara, Takashi,Konno, Tsutomu
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- Insecticidal ethers
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This invention relates to novel fluorinated ethers, useful as insecticides and acaricides, to processes and intermediates for their preparation, to insecticidal and acaricidal compositions thereof and to methods of combating and controlling insect and acarine pests therewith.
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