Abstract
AbstractThe synthesis of bicyclo[3.1.1]heptane (BCHeps) derivatives, which serve as three-dimensional (3D) bioisosteres of benzenes and are the core skeleton of several terpene natural products, is garnering growing interest. The (3+3) cycloadditions of bicyclobutanes (BCBs) represent an attractive method for efficiently accessing (hetero)BCHep skeletons with 100% atom economy. Herein, we give a brief summary of recent achievements in this approach for the synthesis of diverse BCHep derivatives, emphasizing our recent progress in the initial palladium-catalyzed (3+3) cycloadditions of bicyclobutanes with vinyl oxiranes.1 Introduction2 Radical (3+3) Cycloaddition Reaction3 Polar (3+3) Cycloaddition Reaction4 Palladium-Catalyzed Enantioselective (3+3) Cycloaddition Reaction5 Conclusion
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