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Representative polymerization procedure is as follows: In a 30 mL two-necked round flask, monomer (2, 63.0 mg, 0.125 mmol), nickel bromide (II) (13.7 mg, 0.0625 mmol), triphenylphosphine (32.8 mg, 0.125 mmol), 2,2′-bipyridyl (9.7 mg, 0.0625 mmol), and zinc (25.2 mg, 0.388 mmol) were placed and freshly distilled DMAc was added via a syringe. The reaction mixture was stirred using a stirring bar in DMAc at 100 °C for 2 h. The mixture was diluted with DMAc and poured into a 1/9 (v/v) hydrochloric acid/methanol solution with vigorous stirring to separate out a solid. The solid was separated from the solution and washed with methanol and acetone in turn. The insoluble fraction was dried under reduced pressure at 80 °C giving polymer 2. Polymer 2a: IR (KBr): 1657, 1603, 1399, 1312, 1277, 928, 754 cm-1. 1H NMR δ (CDCl3): 7.30–7.34(4 H, m), 7.52(4 H, pseudo s), 7.70–7.75(8 H, m), 7.88–7.90(4 H, m)ppm. 13C NMR δ (CDCl3): 127.2, 127.3, 128.3, 128.4, 129.7, 129.8, 129.9, 129.9, 130.0, 130.7, 130.8, 132.4, 135.7, 137.0, 139.5, 143.7, 145.6, 195.6 ppm. Calcd. For (C32H20O2)n, C 88.04, H 4.62%. Found. C 87.05, H 4.98%.
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Maeyama, K., Ohe, T., Nakamura, H. et al. Successful Synthesis of Fully Aromatic Polyketones via Nickel Complex-Mediated Aromatic Coupling Polymerization of Bis(chlorobenzoylated) o-Terphenyls. Polym J 35, 290–292 (2003). https://doi.org/10.1295/polymj.35.290
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DOI: https://doi.org/10.1295/polymj.35.290
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