Acyclic Diastereoselection in the Wittig Sigmatropic Rearrangement of a Series of Isomeric Crotyl Ethers. A Conceptual Model for the Transition-State Geometry

Article abstract of DOI:10.1021/jo00150a033

The levels of diastereoselection in a broad range of <2,3> Wittig Variations with different substituents on the carbanion termini have been evaluated and permit us to propose a reasonable model for the transition-state geometry.