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Liquid crystals derived from carbohydrates: Synthesis and properties of oxadecaline compounds
Author(s) -
Vill Volkmar,
Tunger HannsWalter
Publication year - 1995
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.1995199506149
Subject(s) - alkoxy group , chemistry , liquid crystal , glycoside , ferroelectricity , phase (matter) , organic chemistry , acetylation , alkyl , materials science , biochemistry , optoelectronics , dielectric , gene
Reaction of glucal 1 with alkoxybenzene leads after hydrogenation and deacetylation to β‐C glycosides 4 , which can be used as chiral compounds in the synthesis of chiral calamitic liquid crystals. The combination with aliphatic aldehydes leads to liquid crystals 5 showing a monotropic S A phase, with aromatic p ‐alkoxy‐substituted aldehydes to compounds 6 with enantiotropic cholesteric and S A phases. Reaction with p ‐alkoxy‐substituted phenylboronic acids gives liquid crystals 7 forming S A and ferroelectric S C * phases. They all exhibit a high twisting power and blue phases in contact preparation.