Abstract
New polymers with germyl ether skeletons in the main chain were synthesized by a novel addition reaction of dichlorodimethylgermane (CMG) or dichlorodiphenylgermane (CPG) with bisphenol A diglycidyl ether (BPGE) using tetrabutylammonium bromide (TBAB) as a catalyst. The polyaddition of dichlorogermanes with BPGE proceeded very smoothly and regioselectively in the presence of 5 mol% of TBAB at 90°C in a sealed tube to give the corresponding polymers 4 and 5 in high yields. On the other hand, no reaction occurred without the catalyst. The rate of polyaddition was affected by the reaction temperature, the nature of reaction solvent, the nature of catalyst, the catalyst concentration, and the monomer concentration. The poly(germyl ether)s are relatively stable in the solid state when allowed to stand in contact with the atmosphere; however, they decompose gradually in solution when in contact with water.
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Nishikubo, T., Kameyama, A. & Kimura, Y. A Novel Synthesis of Poly(germyl ether) by Regioselective Polyaddition of Dichlorogermane with Bisepoxide. Polym J 27, 934–942 (1995). https://doi.org/10.1295/polymj.27.934
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DOI: https://doi.org/10.1295/polymj.27.934