A lateral flexible ring can be introduced on a mesogenic core containing fo
ur rings. Lateral aliphatic rings containing up to 12 atoms have been synth
esized. Despite this large lateral protruding substituent, a large nematic
range is obtained. A compound with a benzo-15-crown-5 lateral ring has been
successfully obtained and shows the possibility of designing nematic liqui
d crystals with a crown ether moiety at a lateral position.