Formation of Substituted Benzocyclobutenes Starting from Donor–Acceptor Cyclopropanes
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We describe an operationally simple, good-yielding, two-step cascade process to convert biscyclopropanes 1 into high-value benzocyclobutene building blocks 3. This study highlights the novel reactivity of our “in-house” donor–acceptor cyclopropane, achieving complete diastereoselectivity and regioselectivity transfer.



