eng Science and Education Publishing World Journal of Organic Chemistry 2014-01-15 2 1 1 8 10.12691/wjoc-2-1-1 WJOC2014211 article Hany M. Mohamed hanysm83@yahoo.com 1 Chemistry Department, Faculty of Medicine, Jazan University, Jazan, Saudi Arabia The titled compounds were prepared by interaction of ethyl 2-(benzo[d]thazol-2-yl)acetate (3) with different arylidinemalononitrile derivatives (4a-c) in EtOH/TEA solution at room temperature. When 3 was treated with 2-(ethoxymethylene)-malononitrile (4f) under same reaction conditions, the ethyl iminothiazolopyridine-4-carboxylate (6) was obtained. Ethyl (amino(methoxy)methyl)-3-(substitutedphenyl)-1-oxo-1H-benzo[4,5]thiazole[3,2-a]pyridine-4-carboxylate (8a,b) was obtained from reaction of 3 with different cyanoacrylate derivatives (7a,b) in MeOH/TEA at room temperature, while the diethyl thiazolo[3,2-a]pyridine-4-carboxylate derivative (8c) was obtained under same reaction conditions. The amino-imino derivative (10) was also prepared and used to synthesis new pyrido[3,2-e][1,2,4]triaziolo[1,5-c]pyrimidine-5-carboxylate derivatives (12). The structures of all the newly synthesized compounds were confirmed based on their elemental analysis and spectroscopic data. http://pubs.sciepub.com/wjoc/2/1/1/wjoc-2-1-1.pdf ethyl 2-(benzo[d]thazol-2-yl)acetatearylidinemalononitrilepyridine-4-carboxylatetriaziolo[15-c]pyrimidine-5-carboxylate