Cyanation of indoles with benzyl cyanide as the cyanide anion surrogate
作者:Lianpeng Zhang、Qiaodong Wen、Jisong Jin、Chen Wang、Ping Lu、Yanguang Wang
DOI:10.1016/j.tet.2013.03.089
日期:2013.5
A copper-mediated direct cyanation of indoles with benzyl cyanide as the cyanideanion surrogate has been achieved. The cascade reaction furnished 3-cyanoindoles under mild reaction conditions in good to excellent yields with various functional groups tolerance.
An efficient trans‐PdCl2(NH2CH2COOH)2‐catalyzed direct C3‐cyanation of indole C─H bonds is described. Notably, free (N─H)‐indoles reacted smoothly using the procedure, and the desired product 3‐cyanoindoles were obtained in good to excellent yields.