Investigation of Thermolysis Products of Some  N ‐Arylthiophene‐2‐carboxamidoximes by Analytical and Spectroscopic Analyses | Zendy

Gaber AbdelAal M. | Zendy; Aly Morsy M. M. | Zendy; Mekhemer Islam M. A. | Zendy

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Investigation of Thermolysis Products of Some N ‐Arylthiophene‐2‐carboxamidoximes by Analytical and Spectroscopic Analyses

Author(s) -

Gaber AbdelAal M.,

Aly Morsy M. M.,

Mekhemer Islam M. A.

Publication year - 2019

Publication title -

chemistryselect

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 34

ISSN - 2365-6549

DOI - 10.1002/slct.201900978

Subject(s) - homolysis , chemistry , thermal decomposition , oxazole , tetralin , amide , naphthalene , pyrolysis , decomposition , nitrogen , imidazole , medicinal chemistry , organic chemistry , radical , catalysis

N ‐arylthiophene‐2‐carboxamidoxime derivatives ( a‐e ) were synthesized by using two methods and then subjected to thermolysis at 200–250 °C for 2 h under nitrogen atmosphere either alone or in the presence of tetralin and/or naphthalene as radical scavengers yielded imidazole, oxazole, triazine and amide derivatives. The pyrolysates from both reactions were separated with their constituents by column chromatography and analyzed then identified 1 H NMR, 13 C NMR and GC‐MS. A plausible mechanism is suggested through two competitive pathways involving the homolysis of N‐O and/or C‐N bonds to account for the thermolysis products.

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