Oxasilacyclopentanes as intermediates for silicon tethered ene cyclisations
作者:Jeremy Robertson、Donald S Middleton、Garry O'Connor、Tsarina Sardharwala
DOI:10.1016/s0040-4039(97)01818-2
日期:1998.2
Oxasilacyclopentanes 3, generated by either free-radical cyclisation, intramolecular hydrosilylation, or silicon tethered Diels-Alder reaction, may be efficiently opened with 2-propenyl-lithium and the product alcohols oxidised to prepare precursors 2 for silicontethered ene cyclisation. Efficient and highly stereoselective ene reactions have been achieved with these precursors.