Novel copolymers of styrene. 11. Fluoro ring-substituted butyl 2-cyano-3-phenyl-2-propenoates |
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Authors: | Gregory B Kharas William S Schjerven Lindsey M Maurer Grace C McGee Maggie E McGovern Laura E Palacios |
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Institution: | 1. DePaul University, Chemistry Department, Chicago, ILgkharas@depaul.edu;3. DePaul University, Chemistry Department, Chicago, IL |
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Abstract: | Novel trisubstituted ethylenes, fluorine ring-substituted butyl 2-cyano-3-phenyl-2-propenoates, RPhCHC?(CN)CO2C4H9 (where R is 2,3-diF, 2,4-diF, 2,5-diF, 2,6-diF, 3,4-diF, 3,5-diF, and 2,4,5-triF) 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 (1.5–2.3% 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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