Synthesis and Properties of Pyranose Derivatives with Trifluoromethyl Group Used as Chiral Dopants for Ferroelectric Liquid Crystals

Abstract

A variety of pyranose derivatives with a trifluoromethyl group were synthesized and found to be excellent chiral dopants for ferroelectric liquid crystals. Relationships between molecular structures and induced ferroelectric properties were discussed.

Some new aspects in the application of perfluoroalkyl halides in the synthesis of fluorine-containing organic compounds

“…MeCN ± H2O, 20 8C I(CF2)nSO2Na and/or NaO2S(CF2)nSO2Na a Molar ratio. b The figures in parentheses correspond to the yields according to 19 F NMR spectroscopy data.…”

“…Moreover, the preparation of the starting building blocks, which are often toxic and expensive, demands special conditions. 19 These circumstances together have made it necessary to develop efficient methods for introducing perfluoroalkyl groups { into organic molecules. The main emphasis in these studies was laid on their direct incorporation by in situ generation of perfluoroalkyl radicals.…”