Stereo- and Regiospecific Syntheses of α- and β-Substituted Vinyl and Dienyl Triflones via the Stille Reaction<sup>1</sup>
作者:Jason S. Xiang、A. Mahadevan、P. L. Fuchs
DOI:10.1021/ja954303i
日期:1996.1.1
Acetylenic anions undergo efficient sulfonylation with trifluoromethanesulfonic anhydride to provide acetylenictriflones. These materials are stereospecifically converted to (Z)-β-iodovinyl triflones in one step via the addition of hydrogen iodide. Access to (Z)-α-iodovinyl triflones is also possible via a two-step process involving tributyltin hydride addition to the acetylenictriflones to generate