Intermolecular Cyclopropanation of Styrenes Using Iodine and Visible Light via Carbon–Iodine Bond Cleavage
摘要:
The intermolecular cyclopropanation of aromatic olefins with activated methylene compounds using iodine and visible light irradiation was described. This reaction proceeds under rare-metal-free conditions. Styrenes with various substituted groups (alkyl and electron-withdrawing groups) provided corresponding cyclopropanes in moderate to good yields.