Abstract: The aliphatic Claisen rearrangement is markedly accelerated by an arylsulfonylmethide substituent at position 2. The generality of this anion variant has been extensively examined (3 1 allyl vinyl ethers) with regard to substitution, stereochemistry, and anion-stabilizing groups. The reactions generally proceed in good yield and with high regio- and stereoselectivities. The regiochemical course of the reaction is independent of the ...