The iodine/DMAP-mediated intramoleculartandem C–C/C–O bond forming reaction of malonate bearing alkene moiety proceeded to give bicyclic lactones with good diastereoselectivity in good yield. The mechanistic investigation was also discussed on the basis of various control experimental results.
作者:Angus W.J. Logan、Jeremy S. Parker、Michal S. Hallside、Jonathan W. Burton
DOI:10.1021/ol300625u
日期:2012.6.15
Manganese(III) acetatemediated oxidative radicalcyclizations have been used to synthesize a range of densely functionalized and sterically congested cyclopentane-lactones. A number of the resulting lactones contain vicinal all-carbon quaternary stereocenters adjacent to a tertiary benzylic stereocenter and are formed with high levels of stereocontrol.