Free-Amine-Directed Alkenylation of C(sp<sup>2</sup>)H and Cycloamination by Palladium Catalysis
作者:Zunjun Liang、Long Ju、Yongju Xie、Lehao Huang、Yuhong Zhang
DOI:10.1002/chem.201202672
日期:2012.12.3
A new protocol for the palladium‐catalyzed free‐amine‐directed alkenylation of C(sp2)H bonds and cycloamination is described. Substituted biaryl‐2‐amines react with various alkenes, including electron‐deficient alkenes, aryl alkenes and alkyl alkenes, to give the corresponding phenanthridines with exclusive regioselectivity. The use of α‐branched styrenes leads to the formation of tricyclic compounds
描述了一种新的协议,用于钯催化的C(sp 2)H键和环氨基化的游离胺定向的烯基化。取代的联芳基-2-胺可与各种烯烃反应,包括缺电子的烯烃,芳基烯烃和烷基烯烃,从而产生具有区域选择性的相应菲啶。使用α支链的苯乙烯会导致形成具有七元胺环的三环化合物。该方法通过游离胺定向的烯基化和随后的加氢胺化环化反应进行。