Abstract
6,6′-Bis(chlorobenzoyl)-2,2′-dimethoxy-1,1′-binaphthyls 2a and 2b are prepared via P2O5–MsOH mediated regioselective diaroylation of 2,2′-dimethoxy-1,1′-binaphthyl (1). NiBr2/Zn-mediated aromatic coupling polymerization of 6,6′-bis(chlorobenzoyl)-2,2′-dimethoxy-1,1′-binaphthyls 2 yields the corresponding wholly aromatic polyketones. When optically active bis(chlorobenzoylated) binaphthyls (2) are employed, optically active wholly aromatic polyketones 3 with large specific rotations, excellent thermal resistance, and excellent solubility to organic solvents are obtained.
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Maeyama, K., Ogura, K., Okamoto, A. et al. Nickel Complex-Mediated Synthesis of Optically Active Wholly Aromatic Polyketones Bearing 2,2′-Dimethoxy-1,1′-binaphthyl-6,6′-ene Units. Polym J 37, 736–741 (2005). https://doi.org/10.1295/polymj.37.736
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DOI: https://doi.org/10.1295/polymj.37.736
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