Abstract:Ring-opening of bicyclo[1.1.0]butanes (BCBs) is emerging as a powerful strategy for 1,3-difunctionalized cyclobutanes synthesis. However, the reported radical strain-release reactions are typically plagued with diastereoselectivity issues. Herein, an atom-economic protocol for the highly chemo- and diastereoselective polar strain-release ring-opening of BCBs with hydroxyarenes catalyzed by π-acid catalyst AgBF4 has been developed. Use of readily available starting materials, low catalyst loading, high selectiv… Show more
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