One-pot synthesis of γ, δ-unsaturated carbonyl compounds from allyl alcohols and vinyl or isopropenyl acetates was achieved through in situ generation of allyl vinyl ethers by the action of the [IrCl (cod)] 2 complex followed by Claisen rearrangement of the resulting ethers. For instance, the reaction of trans-2-methyl-3-phenyl-2-propen-1-ol with isopropenyl acetate in the presence of [IrCl (cod)] 2 (1 mol%) and Cs2CO3 (5 mol%) at 100° C for 3 h ...
