Chinese Chemical Letters

Synthesis and characterization of new optically active copoly (amid-imide) s based on N-phthalimido-l-aspartic acid and aromatic diamines

K Faghihi, H Alimohammadi

Index: Faghihi, Khalil; Alimohammadi, Hamidreza Chinese Chemical Letters, 2010 , vol. 21, # 4 p. 407 - 411

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Abstract

In this article, six new optically active copoly (amide-imide) s (10a–f) were synthesized through the direct polycondensation reaction of N-phthalimido-l-aspartic acid (4) with 1, 5- diamino naphthalene (8), 3, 4-diamino benzophenone (9) in the presence of therphthalic acid (7), fumaric acid (6) and adipic acid (5) as a second diacid in a medium consisting of N- methyl-2-pyrrolidone, triphenyl phosphite, calcium chloride and pyridine. The resulting ...