Palladium(II) 9,10-phenanthrenequinone N-substituted thiosemicarbazone/semicarbazone complexes as efficient catalysts for N-arylation of imidazole
作者:Panneerselvam Anitha、Rajendran Manikandan、Periasamy Viswanathamurthi
DOI:10.1080/00958972.2015.1071484
日期:2015.10.2
catalytic efficiency of the synthesized complexes was examined against N-arylation of imidazole. The system works well with the electron-rich, -neutral, and -deficient aryl halides to afford the products in good to excellent yields. Sterically congested aryl halides and heteroaryl halides have also been used as substrates to provide N-arylated heterocycles. In addition, this methodology can be applicable
一系列钯配合物,[PdCl(L1–4)] (1–4) (L1 = 9,10-菲醌缩氨基硫脲,L2 = 9,10-菲醌甲基缩氨基硫脲,L3 = 9,10-菲醌苯硫缩氨基硫脲,和 L3 9,10-菲醌缩氨基脲),已通过元素分析、UV-vis、FT-IR、1H 和 13C NMR 以及 ESI-质谱法进行合成和表征。针对咪唑的N-芳基化检查了合成配合物的催化效率。该系统适用于富含电子的、中性的和缺乏的芳基卤化物,以提供良好到极好的产率的产品。空间拥挤的芳基卤化物和杂芳基卤化物也已用作底物以提供 N-芳基化杂环。此外,该方法可适用于其他具有含氮杂环的底物。