Difluorooxymethylene-Bridged Liquid Crystals: A Novel Synthesis Based on the Oxidative Alkoxydifluorodesulfuration of Dithianylium Salts

Insertion of a difluorooxymethylene bridge into the mesogenic core structure of phenylcyclohexane‐based liquid crystals results in a class of materials that exhibits a surprising and unprecedented improvement of essentially all application‐relevant properties (see scheme). A novel synthetic procedur...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2001-04, Vol.40 (8), p.1480-1484
Main Authors: Kirsch, Peer, Bremer, Matthias, Taugerbeck, Andreas, Wallmichrath, Tilman
Format: Article
Language:English
Subjects:
desulfuration
fluorine
liquid crystals
mesogens
sulfur
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Summary:Insertion of a difluorooxymethylene bridge into the mesogenic core structure of phenylcyclohexane‐based liquid crystals results in a class of materials that exhibits a surprising and unprecedented improvement of essentially all application‐relevant properties (see scheme). A novel synthetic procedure allows the convenient large‐scale preparation of a variety of compounds based on α,α‐difluoroalkyl ether structures.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20010417)40:8<1480::AID-ANIE1480>3.0.CO;2-M