TRI-N-BUTYLSTANNYL RADICAL INDUCED REARRANGEMENT OF HOMOPROPARGYL (BUT-3-YNYL) ARENESULFONATES - A ROUTE TO NOVEL 4-ARYL-5,6-DIHYDRO-1,2-OXATHIIN 2,2-DIOXIDES
Addition of a tri-n-butylstannyl radical to arenesulfonate esters of the homopropargyl alcohol 1, leads, via ipso-substitution and subsequent 6-endo addition-elimination, to the title derivatives 5.