Abstract
We have developed facile and rapid polycondensation reactions ofN-trimellitylimido-L-leucine diacid a polar chloride1 with eight different derivatives of hydantoin compounds2a-h, in the presence of a small amount of organic medium, such aso-cresol, by using a domestic microwave oven. The polycondensation reactions proceeded rapidly-they were complete within 7–9 min-to produce a series of novel optically active poly(amide-imide)s (3a-h) in high yield with inherent viscosities of 0.33–0.51 dL/g. We characterized the resulting poly(amide-imide)s by elemental analysis, thermal gravimetric analysis (DSC, TGA, and DTG), and FTIR spectroscopy, and by measuring their viscosities, specific rotations, and solubilities. All of the polymers were soluble at room temperature in polar solvents such asN,N-dimethylacetamide,N,N-dimethylformamide, dimethylsulfoxide, tetrahydrofuran, andN-methyl-2-pyrrolidone.
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Faghihi, K. Microwave assisted rapid synthesis of novel optically active poly(amide-imide)s based onN-trimellitylimido-L-leucine diacid chloride and hydantoin derivatives. Macromol. Res. 12, 258–262 (2004). https://doi.org/10.1007/BF03218397
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DOI: https://doi.org/10.1007/BF03218397