A novel, annulative endoperoxidation of tetronate derivatives bearing unsaturated side chains is presented. The reaction requires a simple setup and proceeds under mild conditions to generate tricyclic endoperoxides in modest diastereoselectivities and useful yields. A free-radical mechanism is proposed.
N. Rahimi, S. Sehrish, S. K. Akompong, B. G. Barnes, C. J. Windorff, M. R. Talipov and R. Tello-Aburto, Org. Biomol. Chem., 2025, Advance Article , DOI: 10.1039/D5OB00663E
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