Nielsen, M. K.; Shields, B. J.; Liu, J. Williams, M. J.; Zacuto, M. J; Doyle, A. G. Angew. Chem. Int. Ed. 201756, 7191-7194.
[DOI: 10.1002/ange.201702079] Link PDF

Mild, Redox-Neutral Formylation of Aryl Chlorides via Photocatalytic Generation of Chlorine radicals