Poly(2-vinyl-4.4-dimethyl-5-oxazolone) (P 0 ) and poly[(2-vinyl-4,4-dimethyl-5-oxazolone)-co-(methyl methacrylate)]s with increasing content of methyl methacrylate units (P 1 -P 4 ) were synthesized and characterized. NMR spectra were discussed in terms of monomer sequence distribution and tacticity effects. The reaction of 4-methoxy-4'-hydroxybiphenyl (1) with 2-ethyl-2-oxazoline was milized to prepare 4-methoxy-4'-(p-aminoethoxy)biphenyl (3) through the intermediate 4-methoxy-4'-[(N-propanoyl)-β-amino-ethoxy]biphenyl (2). The homopolymer P 0 and two copolymers P 2 and P 3 were functionalized with 4-methoxybiphenyl side groups by reaction with 3 via a ring-opening process in N,N-dimethylformamide (DMF) or 1,2-dichloroethane. The resulting copolymers P 5 -P 8 were characterized by 1 H and 13 C NMR. The highest degree of functionalized units was obtained in DMF at 80 C.