Synthesis and characterization of novel
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Mallakpour, Shadpour E; Hajipour, Abdol-Reza; Khoee, Sepideh
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Article
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1999
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John Wiley and Sons
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English
β 120 KB
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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