The Chemistry of Cyclobutanes, 2. rész

Abstr addition adduct affords alkene Angew anti H-T antiaromatic aromatic Bashir-Hashemi benzocyclobutenes biradical Bu-t C-C bond cation CF3 CF3 CF3 Chem chemistry cinnamic acid cis-syn cleavage CO₂H CO₂Me complex compounds COOH Cope rearrangement coworkers crystal cubane cyclization cycloaddition cyclobutadiene cyclobutane cyclobutane derivatives cyclobutane rings D. M. Lemal Dewar benzene Diels-Alder diene dimer double bonds electron Engl enone enthalpy equation example F F F F Fluorine formation four-membered ring groups H H H hv/solid hydrocarbon hydrogen intermediate intramolecular irradiation isomer isomerization K. P. C. Vollhardt kcal kcal mol-¹ ketone mixture molecules norbornadiene obtained olefins Organometallics oxidation P. E. Eaton Perkin Trans Ph Ph Ph phosphoramidite photochemical Photochemistry photodimerization Phys Polym prismanes radical react reaction reactive rearrangement ring opening SiMe3 solid stable strain structure substituted syn H-H synthesis t-Bu Tetrahedron Lett thermal thymine undergoes yield