An-Najah National University

An-Najah Blogs


  • Tuesday, May 1, 2007
  • Synthesis and antimicrobial activity of new N-methyl-N-(2-pyridyl) aromatic and heteroaromatic hydrazones
  • Published at:ASIAN JOURNAL OF CHEMISTRY Volume: 19 Issue: 3 Pages: 1658-1666 Published: MAY-JUN 2007
  • Aromatic and heteroaromatic N-methyl-N-(2-pyridyl)-hydrazones 3a-f were synthesized and characterized by elemental analyses, and spectral data. H-1, C-13 NMR and mass spectra supported the formation. of the E-isomer. N-Methyl-N-(2-pyridyl)hydrazone carboxaldehydes can be readily characterized by mass spectrometry. The new hydrazones 3a-h have been screened for antimicrobial activity.
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  • Wednesday, January 1, 2003
  • Nucleophilic Cleavage of Substituted Benzyltrimethylsilanes using Tetraalkylammonium Fluoride in DMSO-H20 Media
  • Published at:Pakistan Journal of Applied Sciences 3(2): 125-128, 2003
  • The nucleophilic cleavage of substituted benzyltrimethyl-silanes in DMSO-Hz0 media using tetraalkylammonium fluoride, TAAF, has been studied. The observed rate constants, pseudo first order rate constants, activation, and thermodynamic parameters have been reported. A mechanism for such cleavage has been proposed. The results fit well Hammett equation. The reaction constant, p! value of (6.7) has been reported. The p value is consistent with a substantial negative charge developing in the transition state.
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Mohammed Abdulah Al-Nuri
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