Studies on Intramolecular Alkylation of an α-Sulfinyl Vinylic Carbanion: a Novel Route to Chiral 1-Cycloalkenyl Sulfoxides
作者:N Maezaki
DOI:10.1016/s0040-4020(00)00713-4
日期:2000.9.29
investigated. Upon treatment with LDA in THF at −78°C, α-sulfinylcarbanion generated from vinylic sulfoxides cyclized at the α-sulfinyl position to give 1-cycloalkenyl sulfoxides with a five- to seven-membered ring. Although iodide or bromide is normally a good leaving group, chloride affords better results than the corresponding iodide and bromide when the reaction takes place at the benzylic position. The cyclization