Evidence Supports The Formation Of Isoimides Derived From Pyromellitic Dianhydride
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Abstract
Some new mono isoimides of asymmetrical pyromillitdiimide derived from pyromellitic dianhydride were synthesized and studied by their melting points , FTIR , and 1HNMR spectroscopy and C.H.N analysis (for some of them) and it was proved that the mechanism of the formation of these isoimides followed , the mechanism suggested by Cotter et al . by using N, N─- dicyclohexylcarbodiimide as dehydrating agent , in spite of the groups attached to the phenyl moiety as mentioned in literatures .
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[1]
Hussein, S. T. et al. 2017. Evidence Supports The Formation Of Isoimides Derived From Pyromellitic Dianhydride. Ibn AL-Haitham Journal For Pure and Applied Sciences. 26, 1 (Apr. 2017), 241–249.
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Chemistry
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