Novel Copolymers of Styrene. 6. Some Oxy Ring-Disubstituted Butyl 2-Cyano-3-Phenyl-2-Propenoates |
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Authors: | Gregory B. Kharas Sara M. Rocus Varun Elangovan Anna N. Kovaleva Sarah Malik Ogechi Nwosu |
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Affiliation: | 1. DePaul University, Chemistry Department, 1110 West Belden Avenue, Chicago, IL 60614-3214gkharas@depaul.edu;3. DePaul University, Chemistry Department, 1110 West Belden Avenue, Chicago, IL 60614-3214 |
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Abstract: | Novel trisubstituted ethylenes, oxy ring-disubstituted butyl 2-cyano-3-phenyl-2-propenoates, RPhCH=C(CN)CO2C4H9 (where R is 4-methoxy-2-methyl, 4-methoxy-3-methyl, 3-ethoxy-4-methoxy, 4-ethoxy-3-methoxy, 3,4-dibenzyloxy, 2-benzyloxy-3-methoxy, and 3-benzyloxy-4-methoxy) were prepared and copolymerized with styrene. The monomers were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and butyl cyanoacetate, and characterized by CHN analysis, IR, 1H and 13C-NMR. All the ethylenes were copolymerized with styrene (M1) in solution with radical initiation (ABCN) at 70°C. The compositions of the copolymers were calculated from nitrogen analysis and the structures were analyzed by IR, 1H and 13C-NMR.Decomposition of the copolymers in nitrogen occurred in two steps, first in the 200-500°C range with residue (2-17 % wt.), which then decomposed in the 500-800°C range. |
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Keywords: | Trisubstituted ethylenes radical copolymerization styrene copolymers |
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