In this study, new tetrazole [A1-A5] were prepared by the reaction of Schiff base with sodium azide in tetrahydrofuran (THF) by the traditional method (reflux) and microwave technology. The prepared compounds were characterized by physical properties, UV-Vis, FT-IR, 1H-NMR, 13C-NMR spectral, and C.H.N analysis. TLC checked the purity of these compounds. Antibacterial behaviors were investigated against a variety of bacteria, including Escherichia coli, and Klebsiella pneumonia Gram (-) ve, Staphylococcus aureus, and Staphylococcus epidermidis Gram (+) ve. The laser efficacy of the [A1-A5] was evaluated after they were radiated by laser for (10, 20, 30) seconds. As the melting point, and color of the substances were determined, it was discovered that they were unaffected, and did not disintegrate or polymerize. Using the Chem3D 19.0 program, the heat of the formulation of the [A1-A5] was investigated.

"Preparation of heterocyclic compounds with new pharmacological properties. Preparation of organic compounds with high biological activity against bacterial germs. Diagnosis of prepared compounds by physical and spectroscopic methods. Spectroscopic and physical measurements validated the prepared compounds. Studying the effect of lasers on these compounds, as it has been proven that the rays do not affect them.

In this study, new Imidazolidin-4-one [A1-A5] compounds were prepared by the reaction of schiff base compounds with alanine in ethanol. The prepared compounds were characterized by physical properties, UV-Vis, FT-IR and 1H-NMR spectral and C.H.N analysis. TLC checked the purity for these compounds. All compounds [A1-A5] were prepared by the traditional method (reflux) and microwave technology. It was found that using the microwave method gives better results in terms of less time and, higher yield. Antibacterial behaviors were investigated against a variety of bacteria, including Escherichia coli and Klebsiella pneumonia Gram (-) ve, Staphylococcus aureus, and Staphylococcus epidermidis Gram (+) ve. The laser efficacy of the compounds [A1-A5] was evaluated after they were radiated by laser for (10, 20, 30) seconds. As the melting point and color of the substances were determined, it was discovered that they were unaffected and did not disintegrate or polymerize. Using the Chem Draw Specialist 19.0 program, the stereoisomers of the prepared compounds [A1-A5] were examined at the lowest layer stage. Using the Chem3D 19.0 program, the heat of the formulation of the compounds [A1-A5] was also investigated.

In this study some new compounds have been synthesized including preparation of some different Schiff  bases[1-6] from the reaction benzdine with substituted of benzal-dehyde in absolute ethanol and converted into derivatives of 1,3-oxazpines(by ring clo- sure reaction (2+5) of Schiff bases with maleic anhydride in dry benzene[7-12],also the 2,3 –dihyroquinozoline-4(1H) one[13-17] were prepared. The prepared compounds were characterized by color and melting point determination, FT-IR and UV-Vis spectral  analysis . Some of the prepared compounds were identified by 1H- NMR and C.H.N spectra  analysis .

This work included the synthesis of azo dye (A1) by the reaction of diazonium salt to benzidine with salicyldehyde at (0-5) oC  and synthesis of schiff base (A2-A6) through reaction substituted aromatic amine with aldehyde group in azo compound (A1) in ethanol compounds (A2-A6) and 2,3-dihydroquinozoline derivatives prepared by reaction schiff base with anthranilic acid in ethanol compounds (A7-A11), and characterization by using spectroscopic techniques Uv/Vis, FT-IR, C.H.N. and H1-NMR of some the prepared compounds using DMSO-d6 as a solvent, in addition to melting point and determination a purity of TLC, This work consisted a study of biological activity for some prepared compounds against four types of pathogenic bacteria to detect their resistance to anti biotic, drugs.