Carbon-ferrier rearrangements in ionic liquids using Yb(OTf)3 as catalyst

The ionic liquids [bmim][BF4] and [bmim][NTf2] are used as efficient recyclable solvents in the ytterbium triflate catalysed carbon-Ferrier rearrangement of triacetyl glucal with allyl silanes, propargyl silane, and silyl enolethers. (C) 2004 Elsevier B.V. All rights reserved.