Phenoxy ring-substituted isopropyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH(CH3){2|two}, {where|exactly where} R is 2-(3-methoxyphenoxy), 2-(4-methoxyphenoxy), 3-(4-methoxyphenoxy), 3-(4-methylphenoxy), 4-(4-bromophenoxy), 4-(4-fluorophenoxy), 2-(4-chlorophenoxy), 3-(4-chlorophenoxy), 4-(3-chlorophenoxy), 4-(4-chlorophenoxy), 3-({3|three},4-dichlorophenoxy), 3-({3|three},5-dichlorophenoxy), 4-({2|two},4-dichlorophenoxy) {were|had been|have been} {prepared|ready} and copolymerized with styrene. The acrylates {were|had been|have been} synthesizedby the piperidine catalyzed Knoevenagel condensation of phenoxy ring-substituted benzaldehydes and isopropyl cyanoacetate, and characterized by CHN {analysis|evaluation}, IR, 1H and 13C-NMR. {All the|All of the|Each of the} acrylates {were|had been|have been} copolymerized with styrene in {solution|answer|remedy|resolution|option} with radical initiation at 70°C. The compositions {of the|from the|in the|on the|with the|of your} copolymers {were|had been|have been} calculated from nitrogen {analysis|evaluation} {and the|and also the|as well as the|along with the|plus the} structures {were|had been|have been} analyzed by IR, 1H and 13C-NMR. Decomposition {of the|from the|in the|on the|with the|of your} copolymers in nitrogen occurred in two {steps|actions|measures|methods}, {first|initial|very first|1st|initially} {in the|within the|inside the} 129-500ºC {range|variety} with residue (2-10% wt.), which then decomposed {in the|within the|inside the} 500-800ºC {range|variety}. 2,2-Bis(bromomethyl)-1,3-dioxolane web (1-Methyl-1H-imidazol-2-yl)methanamine Chemical name PMID:23509865
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