Anion Radical [2 + 2] Cycloaddition as a Mechanistic Probe: Stoichiometry- and Concentration-Dependent Partitioning of Electron-Transfer and Alkylation Pathways in the Reaction of the Gilman Reagent Me2CuLi·LiI with Bis(enones) - Yang, Jingkui; Cauble, David F; Berro, Adam J; Bauld, Nathan L; Krische, Michael J (Journal of organic chemistry, 2004)