Abstract
Unbranched 4-(4′-alkylbenzoyloxy)-, 4-(4′-methylanlinobenzoyloxy)- and 4-(4′dime thylaminobenzoyloxy)benzylidene-4″-cyanoanmlines were synthesized. They show broad nematic phases with high nematic isotropic transitions. Lateral Clsubstituents decrease the clearing points of these liquid crystals by about 80°. The intermediate 4-(4′-alkylbenzoyloxy)benzaldehydes are monotropic nematic.
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