A Novel Synthesis of Pyridine-2(1<i>H</i>)-thione, Pyrazolo[3,4-<i>b</i>]pyridine, Pyrido[2′,3′:3,4]pyrazolo[1,5-<i>a</i>]pyrimidine, Thieno[2,3-<i>b</i>]pyrdine, and Pyrido[3′,2′:4,5]thieno[3,2-<i>d</i>]pyrimidine Derivatives Containing a Naphthyl Moiety
作者:Azza M. Abdel Fattah、Mohamed A. A. Elneairy、Mohamed A. M. Gad-Elkareem
DOI:10.1080/10426500601160991
日期:2007.4.19
(2). Compounds 3a, b were taken as starting materials for the synthesis of pyrazolo[3,4-b]pyridine 7a, b, and 8a, Pyrido-[2′,3′:3,4]pyrazolo[1,5-a]pyrimidine 9a, b; thieno[2,3-b]pyridine 16a–d, 18a, b, 21a–d, 24a, b, and 25a; and pyrido[3,2:4,5]thieno[3,2-d]pyrimidine 17a, b derivatives through their reactions with the corresponding reagents. All structures of the newly synthesized heterocyclic compounds
6-Amino-4-naphthyl-2-thioxo-1,2-dihydropyridine-3,5-dicarbonitriles 3a,b 由萘醛 1a、b 和氰硫代乙酰胺 (2) 反应合成。以化合物3a、b为原料合成吡唑并[3,4-b]吡啶7a、b、8a,吡啶并[2',3':3,4]吡唑并[1,5-a]嘧啶 9a、b;噻吩并[2,3-b]吡啶16a-d、18a、b、21a-d、24a、b和25a;和吡啶并[3,2:4,5]噻吩并[3,2-d]嘧啶17a、b衍生物,通过它们与相应试剂的反应。新合成的杂环化合物的所有结构都是在红外、1H NMR、13C NMR、质谱和元素分析的基础上建立的。