Rapid Synthesis of Novel Optically Active Poly(amide-imide)s Derived From N,N'?-(pyromellitoyl)-Bis-L-alanine Diacid Chloride and Hydantoin Derivatives Under Microwave Irradiation
- Topics:
- Chemical
- Source:
- World Scientific Publishing
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Overview: Eight novel poly (amide-imide) s were synthesized under microwave irradiation by using a domestic microwave oven from the polycondensation reactions of N, Nī-(pyromellitoyl)-bis-L-alanine diacid chloride (1) with eight different derivatives of hydantoin compounds (2a-h) in the presence of a small amount of a polar organic medium such as o-cresol. The polycondensation proceeded rapidly, compared with the conventional solution polycondensation and was completed within 8.10 min, producing a series of new poly (amide-imide) s (3a-h) with inherent viscosities about 0.35.0.68 dL/g in high yields.
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Format: PDF | Size: 149KB | Date: May 2004 | Pages: 7
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