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Ionic liquid catalyzed synthesis and characterization of heterocyclic and optically active poly (amide-imide)s incorporatingl-amino acids

✍ Scribed by Saeed Zahmatkesh


Publisher
Springer
Year
2010
Tongue
English
Weight
396 KB
Volume
40
Category
Article
ISSN
0939-4451

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4,4'-(HexaΒ―uoroisopropylidene)-bis-(phthalic anhydride) (1) was reacted with L-leucine (2) in toluene solution at reΒ―uxing temperature in the presence of triethylamine and the resulting imideacid (4) was obtained in quantitative yield. The compound (4) was converted to the diacid chloride (5) by rea