Rhodium/Silver-Cocatalyzed Transannulation of <i>N</i>
-Sulfonyl-1,2,3-triazoles with Vinyl Azides: Divergent Synthesis of Pyrroles and 2 <i>H</i>
-Pyrazines
作者:Lin Zhang、Ge Sun、Xihe Bi
DOI:10.1002/asia.201601164
日期:2016.11.7
The first cyclization reaction between vinyl azides and N‐sulfonyl‐1,2,3‐triazoles is reported. A Rh/Ag binary metal catalyst system proved to be necessary for the successful cyclization. By varying the structure of vinyl azides, such reaction allows the divergent synthesis of pyrroles and 2H‐pyrazines. The cyclization reactions feature a broad substrate scope, good functional group tolerance, high