Tandem intermolecular–intramolecular carbolithiation: application to the synthesis of silacyclopentanes
作者:Xudong Wei、Richard J.K. Taylor
DOI:10.1016/s0040-4039(03)01843-4
日期:2003.9
Silacyclopentanes have been prepared from vinyl(homoallyl)silanes or vinyl(homopropargyl)silanes and organolithium reagents by a tandem intermolecular–intramolecular sequence involving a 5-exo cyclisation process. The unexpected stereochemical outcome of the sequence involving a 5-exo-dig cyclisation is rationalised.