Amino acids

Microwave-assisted synthesis and characterization of optically active poly (ester-imide) s incorporating l-alanine

S Zahmatkesh, AR Hajipour

Index: Zahmatkesh, Saeed; Hajipour, Abdol R. Amino Acids, 2010 , vol. 38, # 4 p. 1253 - 1260

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Citation Number: 13

Abstract

Abstract Pyromellitic dianhydride (1) was reacted with L-alanine (2) to result [N, N′- (pyromellitoyl)-bis-l-alanine diacid](3). This compound (3) was converted to N, N′- (pyromellitoyl)-bis-l-alanine diacyl chloride (4) by reaction with thionyl chloride. The microwave-assisted polycondensation of this diacyl chloride (4) with polyethyleneglycol-diol (PEG-200) and/or three synthetic aromatic diols furnish a series of new PEI s and Co-PEI s ...