Synthesis and styrene copolymerization of novel trisubstituted ethylenes: 3. Alkoxy ring-substituted isopropyl 2-cyano-3-phenyl-2-propenoates

Designed Monomers and Polymers

Destiny M. Perez¹  Taryn A. Rydbom¹  Nita Shinde¹  Anige’r A.R. Oriol¹  Emily K. Mosher¹  Navneet Kaur¹  William S. Schjerven¹  Gregory B. Kharas¹  Jasmine K. Jody¹  Raj Ranganathan¹  Ashley Renteria¹  Caroline Yeager¹ 

[1] DePaul University;

关键词: Trisubstituted ethylenes;    styrene copolymers;    radical copolymerization;   

DOI  :  10.1080/15685551.2018.1531961

来源: DOAJ

【 摘 要 】

Novel trisubstituted ethylenes, alkoxy ring-substituted isopropyl 2-cyano-3-phenyl-2-propenoates, RPhCH = C(CN)CO2CH(CH3)2 (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 isopropyl cyanoacetate, and characterized by CHN analysis, FTIR, 1H and 13C 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 and the structures were analyzed by FTIR, 1H and 13C NMR. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 250-500ºC range with residue (2.6–3.9% wt.), which then decomposed in the 500-800ºC range.

【 授权许可】

Unknown