Apr, 2001
Oxidative desulfurization-fluorination: A facile entry to a wide variety of organofluorine compounds leading to novel liquid-crystalline materials
ADVANCED SYNTHESIS & CATALYSIS
- ,
- ,
- Volume
- 343
- Number
- 3
- First page
- 235
- Last page
- 250
- Language
- English
- Publishing type
- Book review, literature introduction, etc.
- Publisher
- WILEY-V C H VERLAG GMBH
The oxidative desulfurization-fluorination reaction of organosulfur compounds using an N-haloimide and a fluoride source is demonstrated to be an effective and mild fluorination method that allows us to synthesize in high yields with high chemoselectivity various types of gem-difluoro compounds, trifluoromethyl-substituted (hetero)-aromatics, trifluoromethyl ethers, and N-trifluoromethylanilines. Herein briefly summarized are the synthetic procedures as well as the scape and limitations of the. reaction. The applicability of the reaction is demonstrated by the synthesis of a difluorinated glutamic acid and novel liquid-crystalline materials having an N-trifluoromethylamino, trifluoromethoxy, or 1,2-difluoroethylene group. The fluorine-containing liquid-crystalline materials are compared with the corresponding non-fluorinated materials in respect to phase transition behaviors and electro-optical properties and shown to be suitable for not only super twisted nematic (STN) but also for thin film transistor (TFT)-addressed liquid crystals displays.
- Link information
- ID information
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- ISSN : 1615-4150
- Web of Science ID : WOS:000168248800002