Synthesis and styrene copolymerization of halogen novel ring-substituted isobutyl phenylcyanoacrylates

Abstract

<p></p><p>Novel oxy ring-trisubstituted isobutyl phenylcyanoacrylates, RPhCH=C(CN)CO<sub>2</sub>CH<sub>2</sub>CH(CH<sub>3</sub>)<sub>2</sub><sub> </sub>, where R is 5-bromo-2,4-dimethoxy, 2-bromo-3-hydroxy-4-methoxy, 3-chloro-2,6-difluoro, 4-chloro-2,6-difluoro, 2,3,5-trichloro, 2,3,6-trichloro, 2,3,4-trifluoro, 2,3,5-trifluoro, 2,4,5-trifluoro, 2,4,6-trifluoro, 3,4,5-trifluoro, 2,3,5,6-tetrafluoro, 2,3,4,5,6-pentafluoro were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and isobutyl cyanoacetate and characterized by CHN analysis, IR, <sup>1</sup>H and <sup>13</sup>C NMR. The acrylates were copolymerized with styrene in solution with radical initiation (ABCN) at 70°C. The compositions of the copolymers were calculated from nitrogen analysis. </p><br><p></p>