Efficient preparation of trisubstituted alkenes using the SmI2 modification of the Julia–Lythgoe olefination of ketones and aldehydes
作者:István E Markó、Fiona Murphy、Lucien Kumps、Ali Ates、Roland Touillaux、Donald Craig、Santiago Carballares、Simon Dolan
DOI:10.1016/s0040-4020(01)00079-5
日期:2001.3
High yields of di- and tri-substituted alkenes are obtained by a modification of the Julia–Lythgoeolefination reaction involving the in situ capture of intermediate β-alkoxy-sulfones by benzoyl or trimethylsilyl chloride, followed by SmI2-mediated reductiveelimination. This novel protocol also provides a connective preparation of dienyl ethers, which are important partners in Diels–Alder cycloadditions
Efficient preparation of trisubstituted alkenes using the Julia-Lythgoe olefination of ketones. On the key-role of SmI2 in the reductive elimination step
作者:István E Markó、Fiona Murphy、Simon Dolan
DOI:10.1016/0040-4039(96)00200-6
日期:1996.3
Modification of the Julia-Lythgoeolefination reaction between ketones and primary sulfones leads to trisubstitutedalkenes in good overall yields. Samarium diiodide is shown to play a crucial role in the reductiveeliminationstep.