Abstract
Terephthalaldehyde (TPA) and isophthalaldehyde (IPA) were polymerized with the ethylmagnesium bromide-(−)-sparteine (EtMgBr-Sp) complex and aluminum alkoxides as catalysts to obtain polyesters through the Tishchenko reaction. The polyester prepared from TPA with the EtMgBr-Sp complex was characterized by IR, FD mass, 1H and 13C NMR spectroscopies, and was found to be a random copolymer composed of oxycarbonyl-1,4-phenylenemethylene and terephthaloyloxymethylene-1,4-phenylenemethyleneoxy units. The polyesters possessed terminal formyl groups and were further polymerized with the EtMgBr-Sp complex. On the basis of the results, a possible mechanism for the polymerization is discussed.
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Choi, SH., Yashima, E. & Okamoto, Y. Synthesis of Polyesters from Terephthalaldehyde and Isophthalaldehyde through Tishchenko Reaction Catalyzed by the Ethylmagnesium Bromide-(−)-Sparteine Complex and Aluminum Alkoxides. Polym J 29, 261–268 (1997). https://doi.org/10.1295/polymj.29.261
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DOI: https://doi.org/10.1295/polymj.29.261