SEARCH Articles Figures Tables And electron withdrawing substituents Carbon Acids and Ranking of Electron-Withdrawing Groups Cycloaddition and Heterocyclization Reactions of Acetylenic Compounds with Electron-Withdrawing Substituents Effect of Electron Withdrawing Substituents in OsO4 Reactions and Pinacol-Pinacolone Reaction ElcB elimination electron-withdrawal and Electron withdrawal Electron withdrawers Electron-donating and -withdrawing Electron-withdrawing substituents carbonyl and nitro compounds Halogens show evidence of both electron withdrawal and donation Poly(p-Phenylene Vinylene) Homopolymers with Electron-Withdrawing and Donating Substituents