<p>Novel
trisubstituted ethylenes, alkyl ring-substituted 2-methoxyethyl phenylcyanoacrylates,
RPhCH=C(CN)CO<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>OCH<sub>3</sub><sub> </sub>(where R is 2-methoxy, 3-methoxy, 4-methoxy, 2-ethoxy, 3-ethoxy,
4-ethoxy, 4-propoxy, 4-butoxy, 4-hexyloxy) were prepared
and copolymerized with styrene. The ethylenes were synthesized by the
piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes
and 2-methoxyethyl cyanoacetate, and characterized by CHN analysis, IR, <sup>1</sup>H
and <sup>13</sup>C NMR. All the ethylenes were copolymerized with styrene in
solution with radical initiation (ABCN) at 70°C. The compositions of the copolymers were
calculated from nitrogen analysis.</p>
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