Studies on the addition of allyl oxides to sulfonylallenes. Preparation of highly substituted allyl vinyl ethers for carbanionic Claisen rearrangements
Silver-Catalyzed Rearrangement of Propargylic Sulfinates to Allenic Sulfones
作者:Michael Harmata、Chaofeng Huang
DOI:10.1002/adsc.200700447
日期:2008.5.5
Treatment of propargylicsulfinate esters with 2 mol % of silver hexafluoroantimonate results in the rapid formation of allenicsulfones in essentially quantitative yield.
enables the expedient construction of a host of β-fluoroalkyl-containing cinnamate derivatives. The reaction proceeds through visible-light-promoted gold redox catalysis, occurs smoothly under very mild reaction conditions, accommodates a large variety of functional groups, and more importantly allows the incorporation of fluorine and aryl groups with excellent regio- and stereoselectivity. The concomitant