A new protocol for the catalytic cyclopropanation of α,β-unsaturated carbonyl compounds with diiodomethane by means of photoredox catalysis has been successfully developed. The transformation is characterized by its mild conditions, functional group compatibility, and excellent selectivity profile.
Photoredox-catalyzed Cyclopropanation of Michael Acceptors
A.M. del Hoyo, M.G. Suero
Eur. J. Org. Chem. 2017, DOI: 10.1002/ejoc.201601604.