Ahmed Abdelhamid Mohammed Ahmed <br/><br/>
Synthesis and characterization of some new bis polyfunctionalized fused heterocyclic derivatives containing nitrogen and/or sulfur /  
 تشييد و توصيف بعض المشتقات غير المتجانسة الحلقة الثنائية عديده الداله الجديدة المحتوية علي النيتروجين و /أو الكبريت 
Ahmed Abdelhamid Mohammed Ahmed ; Supervised Sadek E. Abdou , Mohammed A. A. Elneairy , Ahmed Eltaher Mahmoud 
 - Cairo :   Ahmed Abdelhamid Mohammed Ahmed ,   2011 
 - 204 P. ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Pharmacy - Department of Organic Chemistry 
<br/><br/> This work has been carried out to investigate the chemical reactivity and synthetic potentiality of bis cyanoacetohydrazide 3 and bis cyanoacetamide 33a,b derivatives via their reactions with several aldehydes to give the bis yeildene and bis coumarin derivatives. The bis yeildene reacted with active methylene containing compounds or hydrazine hydrate to afford the corresponding bis pyridone and bis pyrazole derivatives respectively 
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<br/><br/><label>Subjects--Index Terms: </label>Bis pyrazoles Bis pyridone Bis thiophenes