作者:Eman A. El Rady
DOI:10.1080/10426500701724522
日期:2008.6.9
catalytic amount of triethyl-amine afforded new polysubstituted thiazolo[4,5-c]pyrazole, thiazolo[4,5-d]-pyrimidine, thiazolo[4,5-b]-pyridine, thiazolo[4,5-b][1,5]benzodiazepine, thiazolo[4,5-b] [1,5]benzoxazepine, thiazolo[4′, 5′:6,5]-pyrimido[1,2-b][1,2,4]triazole and thiazolo[4′, 5′:6,5]pyrimido[1,2-b]pyrazole derivatives in good yields. The structure of the new compounds were confirmed based on IR, 1
4-Chloro-2,3-dihydrothiazole-5-carboxaldehyde 与一些亲核试剂反应,如水合肼、苯肼、尿素、硫脲、氨基脲、氰基乙酰胺、氰硫基乙酰胺、氰基乙酰肼、2-苯二胺、2-氨基苯酚在催化量的三乙胺存在下,氨基[1,2,4]三唑和3-氨基吡唑在乙醇溶液中回流,得到新的多取代噻唑并[4,5-c]吡唑,噻唑并[4,5-d]-嘧啶、噻唑并[4,5-b]-吡啶、噻唑并[4,5-b][1,5]苯二氮卓类、噻唑并[4,5-b] [1,5]苯并恶氮杂、噻唑并[4,5-b][1,5] :6,5]-嘧啶并[1,2-b][1,2,4]三唑和噻唑并[4', 5':6,5]嘧啶并[1,2-b]吡唑衍生物产率良好。基于IR、 1 H-, 13 C-NMR、质谱和元素分析确认了新化合物的结构。