作者:Hua Liu、Chao Zheng、Shu-Li You
DOI:10.1021/jo402511b
日期:2014.2.7
We report herein an unprecedented direct catalytic C6 functionalization reaction of 2,3-disubstituted indoles with various N–Ts aziridines catalyzed by Sc(OTf)3 under mild conditions. Mechanistic studies revealed that a kinetically favored but reversible formal [3 + 2] annulation occurs initially. The direct C6 functionalization, although having a relatively higher energetic barrier, delivers the thermodynamically
我们在这里报道了在温和的条件下,由Sc(OTf)3催化的各种N-Ts氮丙啶2,3-二取代的吲哚空前的直接催化C6官能化反应。机理研究表明,动力学上有利但可逆的形式[3 + 2]初始出现。直接的C6功能化尽管具有相对较高的能量屏障,但仍可提供热力学上有利的产品。