Lactone Radical Cyclizations and Cyclization Cascades Mediated by SmI<sub>2</sub>–H<sub>2</sub>O
作者:Dixit Parmar、Hiroshi Matsubara、Kieran Price、Malcolm Spain、David J. Procter
DOI:10.1021/ja3047975
日期:2012.8.1
Unsaturated lactones undergo reductive radicalcyclizations upon treatment with SmI(2)-H(2)O to give decorated cycloheptanes in a single highly selective operation during which up to three contiguous stereocenters are generated. Furthermore, cascade processes involving lactones bearing two alkenes, an alkene and an alkyne, or an allene and an alkene allow "one-pot" access to biologically significant