Synthesis of Some New Thieno[2,3-<i>b</i>]pyridines, Pyrimidino[4′,5′:4,5]thieno[2,3-<i>b</i>]-pyridines, and 2,3-Dihydro-1,3,4-thiadiazoles
作者:Abdou O. Abdelhamid、Zeineb H. Ismail、Soad M. Abdel-Gawad、Moustafa M. Ghorab、Anhar Abdel-Aziem
DOI:10.1080/10426500802077630
日期:2008.12.23
chloroacetonitrile. These compounds were conveniently converted into novel pyrido[4′,5′:4,5]thieno[3,2-d]pyrimidines. Also, 2,3-dihydro-1,3,4-thiadiazole was synthesized from hydrazonoyl halides and 2-benzofuran-2-yl-3-(phenylamino)-3-thioxopropanenitrile. The structures of the products have been elucidated by elemental analyses, spectral data studies, and alternative syntheses whenever possible. The