As readers will know, we’ve been interested in transformations of alkenes for many years. In our latest installment, we teamed up with MJ Koh (National University of Singapore), who developed a really cool difunctionalization of alkenes catalyzed by iron complexes. Juan Serviano, our intrepid Holland Group catalysis warrior, did many spectroscopic experiments on their catalyst system and DFT calculations, which helped to identify and rule out various resting-state structures. This has now appeared in Nature Catalysis, and features an interesting mechanism in which alkene binding to iron induces Fe-C bond homolysis that leads to the key C-C bond formation. Great job, Juan!