Access to 2-substituted-2<i>H</i>-indazoles<i>via</i>a copper-catalyzed regioselective cross-coupling reaction
作者:Rong Zhang、Zheng Liu、Qiujun Peng、Yijun Zhou、Lanting Xu、Xianhua Pan
DOI:10.1039/c8ob00128f
日期:——
cross-coupling reaction using commercially available 1H-indazoles with diaryliodonium salts is described. The methodology features ample structural versatility, affording 2-substituted-2H-indazole in good yields and complete N(2)-regiocontrol. Furthermore, the utility of the reaction was demonstrated in the synthesis of a known estrogen receptor β agonist. Mechanistic studies using density functional
描述了使用可商购的1 H-吲唑与二芳基碘鎓盐进行的CuCl催化的C–N交叉偶联反应。该方法的特点是具有足够的结构多功能性,以高收率和完全的N(2)-区域控制提供2-取代-2 H-吲唑。此外,在已知雌激素受体β激动剂的合成中证明了该反应的效用。使用建议,完整的区域选择性可以归结为唯一的弱碱TFO密度泛函理论计算的机制研究-在我们的系统中不能吲唑去质子和催化剂氧化过程将是限速步骤。