New Sigmatropic Sequences Based on the Wittig Rearrangement of Bis-Allylic Ethers. Regiocontrolled Joining Reactions of Two or Three Allylic Moieties Leading to Unsaturated Carbonyl Compounds

Article abstract of DOI:10.1021/jo00339a051

Three new sigmatropic sequences based on the <2,3> Wittig rearrangement of bis-allylic ethers are described which provide unique, regiocontrolled methods for the synthesis of a variety of unsaturated carbonyl compounds possessing interesting molecular frameworks.