Abstract
New aromatic aldehydes were prepared in the conventional literature manner by Williamson etherification reaction of p-chlorobenzaldehyde with p-substituted phenols, or by esterification reaction of cyanoacetic acid with p-hydroxybenzaldehyde in the presence of dicyclohexylcarbodiimide (DCC). The obtained monomers have been confirmed structurally by IR, 1H-NMR spectroscopy, elemental analysis and characterized by solubility, thermal behavior and refraction index. Keywords: monomer, aromatic aldehyde, mesogenic precursor