作者:A. H. Moustafa、H. A. Saad、W. S. Shehab、M. M. El-Mobayed
DOI:10.1080/10426500701557286
日期:2007.12.24
2-(2-Arylvinyl)-6-methyl-4-mercapto-5-acetylpyrimidine derivatives 3 a − d , were synthesized form the reaction of the appropriate isothiocyanate derivatives 1 with α, β -unsaturated aminoketone 2 . Compound 3 was alkylated with methyl iodide, ethyl chloroacetate and/or bromosugar to afford 6 , 9 , and 22 a − c respectively. Cyanoethylation of 3 b afforded 6 b which upon cyclization with hydrazine
2-(2-Arylvinyl)-6-methyl-4-mercapto-5-acetylpyrimidine 衍生物 3a-d 是通过合适的异硫氰酸酯衍生物 1 与 α, β-不饱和氨基酮 2 的反应合成的。化合物3用碘甲烷、氯乙酸乙酯和/或溴糖烷基化,分别得到6、9和22a-c。3b的氰乙基化得到6b,其在与水合肼环化后得到吡唑并嘧啶7。6b的溴化得到二溴化合物8。噻吩并[2,3-d]嘧啶10和12通过烷基化产物9用TEA/EtOH闭环和/或通过酰肼11用NaOEt/EtOH环化而获得。而噻吩并 [2,3-d] 嘧啶 14 是通过在 TEA/EtOH 和 Na2CO3 溶液中用氯丙酮将 3b 烷基化直接获得的。环加成产物15和16通过3b与马来酸二乙酯和/或马来酸酐的反应获得。通过分别用二硫化碳、原甲酸三乙酯和乙酰丙酮处理酰肼11获得1,3,4-恶二唑17、吡唑18和19。同时,11与对