A paper published by Marcos G. Suero et al. in Angewandte Chemie, International Edition is among the most accessed articles of the journal in December 2016.

Abstract

The first stereoconvergent cyclopropanation reaction by means of photoredox catalysis using diiodomethane as the methylene source is described. This transformation exhibits broad functional group tolerance and it is characterized by an excellent stereocontrol en route to trans-cyclopropanes regardless of whether E- or Z-styrene substrates were utilized.

A Stereoconvergent Cyclopropanation Reaction of Styrenes
A.M. del Hoyo, A.G. Herraiz and M.G. Suero
Angew. Chem., Intl. Ed. 2016, DOI: 10.1002/anie.201610924