Up the Hill: Selective Double-Bond Isomerization of Terminal 1,3-Dienes towards Z-1,3-Dienes or 2Z,4E-Dienes
作者:Florian Pünner、Anastasia Schmidt、Gerhard Hilt
DOI:10.1002/anie.201107512
日期:2012.1.27
different cobalt catalyst systems led to the selectiveisomerization of 1,3‐dienes. In the case of the [CoBr2(py‐imine)]‐catalyzed reaction, the Z‐1,3‐diene was formed in a highly selective manner (see scheme). When the catalyst precursor [CoBr2(dpppMe2)] was applied, a double‐bond migration and selectiveisomerizationtowards the 2Z,4E‐configured 2,4‐dienes were observed