Title of article :
Synthesis and Characterization of New Symmetrical Pyromellitdiimide Derivatives and Their Amic Acids
Author/Authors :
Ali, E. T. University of Baghdad - College of Education , Ibn Al-Haitham - Department of Chemistry, Iraq , AL-Aliawy, K. M. Lazim University of Baghdad - College of Education , Ibn Al-Haitham - Department of Chemistry, Iraq , Tomma, J. H. University of Baghdad - College of Education ،Ibn Al- Haitham - Department of Chemistry, Iraq
Abstract :
The new symmetry pyromellitdiimide [VII]a-c,n were synthesized by two-step reactions from the corresp onding pyromellitic dianhydride . A new sy mmetrical amic acid [VI]a-c,n was synthesized by the reaction of pyromellitic dianhydride with different heterocyclic amines in dry acetone . The second reaction step includes intramolecular cyclization of amic acid in the presence of sodium acetate -acetic anhydride system at 85°C. Structures of the synthesized compounds have been ascertained by their melting points , C.H.N analysis , UV-Vis, FTIR and^1HNMR spectroscopy.
Keywords :
Py romellitdiimide , Py romellitic dianhydride , Py romellitamic diacid
Journal title :
Ibn Alhaitham Journal For Pure and Applied Science
Journal title :
Ibn Alhaitham Journal For Pure and Applied Science
