SEARCH Articles Figures Tables Cycloaddition reactions photochemical alkene dimerization Cycloaddition reactions thymine dimers Cycloadditions dimer Dimerization and Intermolecular Cycloaddition Reactions Dimerization reactions Dimerization, Intermolecular Cycloaddition, and Reactions of Acetylenes Intermolecular cycloadditions dimerization reactions Photochemical -Cycloaddition and Dimerization Reactions