Synthesis and mesomorphic properties of some new chiral thiobenzoates containing three rings

Abstract

Six new compounds with chiral terminal chains and three rings bridged via the –COS– and –COO– groups have been synthesized. Three of them belong to series A and have two benzene rings and one bicyclo[2,2,2]octane, while the remaining three come from series B, where all three are benzene rings. Series A compounds share a characteristic feature of two smectic phases: SmA* and SmB*, whereas mesogens from the B series exhibit only the one SmA* phase.

Acknowledgements

Prof. Jan Przedmojski, Warsaw University of Technology, Poland is thanked for X‐ray measurements. I would like to thank Wojciech Zając for discussions during preparation of the manuscript. This work was partly supported by the Polish Ministry of Scientific Research and Information Technology, Grant No. 4 T09A 200 25.