“Microwave Synthesis and Evaluation of Antibacterial Activities of Some New Heterocyclic Derivatives of Benzothiazole” in a Master’s Thesis at the College of Science

The MSc student Zahra’ Kadhim Chefcheer of the Department of Chemistry discussed her thesis entitled Microwave Synthesis and Evaluation of Antibacterial Activities of Some New Heterocyclic Derivatives of Benzothiazole”. The discussion was held at the great hall in the College of Science on Sunday 23/8/2020.

 

The researcher stated that she prepared the azo aldehyde derivative through the reaction of a base solution of hydroxyl benzaldehyde compound with the diazonium salt solution of the amino-benzothiazole compound. The resulting aldehyde compound was treated with some available anilines.

 

She explained that she used the microwave agitation technique in absolute ethyl alcohol to obtain seven amine derivatives of benzothiazole respectively. As the cyclic addition of the resulting amines with succinic anhydride by using microwave technology in a small amount of benzene gave seven new oxazpan dione derivatives carrying the benzothiazole unit, respectively. On the other hand, the treatment of intermediate amines with phthalate anhydride by using microwave technology in a small amount of benzene produced seven new benzoxazepine diene derivatives carrying one benzothiazole unit, respectively.She added that she diagnosed the final compounds’ structures by means of quantitative elemental analysis (CHNS) and spectroscopic methods including infrared spectroscopy and proton magnetic resonance. And to test the bioactivity of the required compounds against two types of bacteria, Staphylococcus aurous, positive for Gram and Escherichia coli, negative for Gram stain. As the test results indicated that all the compounds of Oxazepine and Oxazepine showed a greater effect than gentamycin towards the positive bacteria for the Gram stain. Moreover, most of the compounds showed a greater effect than gentamycin against the negative bacteria for the Gram stain.

 

It is to be mentioned that the study was conducted under the supervision of Prof. Dr. Zaid Hasan Aboud of the College of Science, University of Karbala.

The discussion committee was composed of Prof. Dr. Nabil Abdul Ridha of the College of Science, Al-Qadisiyah University, Asst. Prof. Dr. Haitham Dalloul Hanoun of the College of Science, University of Karbala, and Asst. Prof. Dr. Majid Jarry Muhammed of the College of Science, University of Kufa.