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(searched for: (10.5155/eurjchem.2.4.509-513.463))
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Mahmoud Abdallah Mohamed, Eman Kamal Ahmad AbdelAll, Yasser Hassan Zaki, Abdou Osman Abdelhamid
European Journal of Chemistry, Volume 2, pp 509-513; doi:10.5155/eurjchem.2.4.509-513.463

Abstract:
Pyrazolo[1,5-a]pyrimidine, [1,2,4]triazolo[1,5-a]pyrimidine and pyrimido[1,2-a] benzimidazole derivatives were synthesized by reaction of sodium salt of 3-hydroxy-(1-pyridin-2-yl)prop-2-en-1-one or sodium salt of 3-hydroxy-1-(pyridin-3-yl)prop-2-en-1-one with different heterocyclic amines in piperidenium acetate. Also, 3-amino-6-(2-pyridyl)thieno[2,3-b]pyridine derivatives were synthesized via reaction of pyridine-2-thione with various halogenated compounds. The structures of the newly synthesized compounds were confirmed by elemental analysis, spectral data, X-ray and alternative synthetic routes whenever possible.
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