title: Silver-Catalyzed Cyclization of Sulfonyl Allenes to Dihydrofurans.
abstract: Treatment of α-hydroxy allenic sulfones with 10 mol % of silver fluoride in acetonitrile at ambient temperature furnished the corresponding 3-tosyl 2,5-dihydrofurans in excellent yields via a 5-endo-trig cyclization. The starting α-hydroxy allenic sulfones were prepared by lithiation of allenic sulfones and trapping with carbonyl compounds.
authors: Department of Chemistry, University of Missouri-Columbia , Columbia, Missouri 65211, United States.
authors: Rama Rao
authors: RR
authors: Tata
authors: Department of Chemistry, University of Missouri-Columbia , Columbia, Missouri 65211, United States.
authors: Michael
authors: M
authors: Harmata