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Abstract
61 mono- and 16 bisalkenyl(oxy)substituted bi- and tricyclic esters have been synthesized by systematically varying both the position of the isolated C, C-double bonds and the nature of the central core ring system. The influences of the various structural parameters on the mesomorphic properties are discussed and the observed nematic and/or smectic thermal stabilities are compared with those of the corresponding saturated alkyl(oxy) analogs.