Novel alkoxy ring-substituted isobutyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH2CH(CH3){2|two} ({where|exactly where} R is 2-methoxy, 3-methoxy, 4-methoxy, 2-ethoxy, 3-ethoxy, 4-ethoxy, 4-propoxy, 4-butoxy, 4-hexyloxy) {were|had been|have been} {prepared|ready} and copolymerized with styrene. The acrylates {were|had been|have been} synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and isobutyl cyanoacetate and characterized by CHN elemental {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 (ABCN) at 70°C. The composition {of the|from the|in the|on the|with the|of your} copolymers was 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. Thermal properties {of the|from the|in the|on the|with the|of your} copolymers are characterized by DSC and TGA. 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} 200-500ºC {range|variety} with residue (1.8-3.3% wt.), which then decomposed {in the|within the|inside the} 500-800ºC {range|variety}. 278183-12-3 Chemscene 4-Bromobenzoic acid-d4 Order PMID:24957087
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