Methacrylic azomonomers based on para-aminoacetanilide suitable for preparation of liquid crystal (LC) photoaligning functionalized polymers were synthesized. Azofragments include various aromatic rings: benzene, naphthalene, 8-oxyquinoline, and thiazole derivatives. The kinetics of polymerization of synthesized azomonomers was studied. Efficient polymerization constants K of thermo-induced radical polymerization are presented. The relative activities r1 and r2 were calculated by the Fineman-Ross method.