Novel liquid crystalline monomer, 4-methoxybiphenyloxy-(N,N’-dipropargyl)undecane amide, subjected to metathesis reaction with transition metal catalyst systems. It was found that the MoCl5-EtAlCl2 catalyst system was very effective for the cyclopolymerization of the monomer. Resulting polymers exhibited good solubility in common organic solvents such as THF, chloroform, etc. The number-average molecular weight (MnBAR) values of the polymers were in the range of 0.98 x 10(4) - 1.4 x 10(4) relative to polystyrene standard by GPC. Thermal properties of the monomer and the polymer synthesized were examined by differential scanning calorimetry (DSC) and cross-polarized optical microscopy. The polymer exhibited the enantiotropic liquid crystallinity and smectic mesophase.