Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride
This work involves the synthesis and characterization of asymmetrical pyromellitdiimide derivatives [IV]a-f by four sequence steps selective reaction . One mole of pyromellitic dianhydride was reacted with one mole of various primary aromatic amines [ 4-nitro aniline , 4-chloro aniline , 4-toludi...
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| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2017-05-01
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| Series: | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| Subjects: | |
| Online Access: | https://jih.uobaghdad.edu.iq/index.php/j/article/view/595 |
| _version_ | 1818192171804655616 |
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| author | E. T. Ali |
| author_facet | E. T. Ali |
| author_sort | E. T. Ali |
| collection | DOAJ |
| description |
This work involves the synthesis and characterization of asymmetrical pyromellitdiimide
derivatives [IV]a-f
by four sequence steps selective reaction . One mole of pyromellitic dianhydride
was reacted with one mole of various primary aromatic amines [ 4-nitro aniline , 4-chloro aniline , 4-toludine and 4-anisidine] in excess of dry acetone to produce six compounds (N-substituted-pyromellitamic monoacid) [I]a-f . These new compounds [I]a-d were converted to the corresponding
N- substituted- pyromellitmonoimide [II]a-d via their heating at (80-90)
0
C in sodium acetate-acetic
anhydride mixture .
The compounds [II]a-f
were allowed to react with one mole of another primary amines in
excess of dry acetone to give new derivatives of amic acid [II]a-d followed by intramolecular
cyclization reaction of these compounds [IV]a-f in sodium acetate-acetic anhydride system to yield the
desired asymmetrical pyromellitdiimide derivatives [IV]a-f
, the above reactions can be summarized in
Scheme 1.
All the synthesized compounds have been studied and charachterized by their melting points
, FTIR , and
1
HNMR spectroscopy (for some of them)
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| first_indexed | 2024-12-12T00:26:16Z |
| format | Article |
| id | doaj.art-7a157a7e62b44bf885d31b2da170464a |
| institution | Directory Open Access Journal |
| issn | 1609-4042 2521-3407 |
| language | English |
| last_indexed | 2024-12-12T00:26:16Z |
| publishDate | 2017-05-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| spelling | doaj.art-7a157a7e62b44bf885d31b2da170464a2022-12-22T00:44:37ZengUniversity of BaghdadIbn Al-Haitham Journal for Pure and Applied Sciences1609-40422521-34072017-05-01253Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic DianhydrideE. T. Ali This work involves the synthesis and characterization of asymmetrical pyromellitdiimide derivatives [IV]a-f by four sequence steps selective reaction . One mole of pyromellitic dianhydride was reacted with one mole of various primary aromatic amines [ 4-nitro aniline , 4-chloro aniline , 4-toludine and 4-anisidine] in excess of dry acetone to produce six compounds (N-substituted-pyromellitamic monoacid) [I]a-f . These new compounds [I]a-d were converted to the corresponding N- substituted- pyromellitmonoimide [II]a-d via their heating at (80-90) 0 C in sodium acetate-acetic anhydride mixture . The compounds [II]a-f were allowed to react with one mole of another primary amines in excess of dry acetone to give new derivatives of amic acid [II]a-d followed by intramolecular cyclization reaction of these compounds [IV]a-f in sodium acetate-acetic anhydride system to yield the desired asymmetrical pyromellitdiimide derivatives [IV]a-f , the above reactions can be summarized in Scheme 1. All the synthesized compounds have been studied and charachterized by their melting points , FTIR , and 1 HNMR spectroscopy (for some of them) https://jih.uobaghdad.edu.iq/index.php/j/article/view/595pyromellitic dianhydride, pyromellitidiimides, pyromellitidiisoimides. |
| spellingShingle | E. T. Ali Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride Ibn Al-Haitham Journal for Pure and Applied Sciences pyromellitic dianhydride, pyromellitidiimides, pyromellitidiisoimides. |
| title | Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride |
| title_full | Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride |
| title_fullStr | Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride |
| title_full_unstemmed | Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride |
| title_short | Synthesis Of New Asymmetrical Pyromellitdiimides Derived From Pyromellitic Dianhydride |
| title_sort | synthesis of new asymmetrical pyromellitdiimides derived from pyromellitic dianhydride |
| topic | pyromellitic dianhydride, pyromellitidiimides, pyromellitidiisoimides. |
| url | https://jih.uobaghdad.edu.iq/index.php/j/article/view/595 |
| work_keys_str_mv | AT etali synthesisofnewasymmetricalpyromellitdiimidesderivedfrompyromelliticdianhydride |