Regiodivergent Formal [4+2] Cycloaddition of Nitrosoarenes with Furanyl Cyclopropane derivatives as 4π Components

Cyclopropanes are commonly used as valuable 3-carbon building blocks. Herein, we disclose a different reactivity pattern of furanyl cyclopropanes, which serve as 4-carbon component in Lewis acid-promoted [4+2] cycloadditions with...