Nature 505, 386–390 (2014); doi:10.1038/nature12781

In Fig. 2b of this Letter, the structure of RuPhos should be depicted with a PCy2 (not PCy3) substituent. The correct structure for RuPhos is 2-dicyclohexylphosphino-2′,6′-diisopropoxybiphenyl (CAS number 787618-22-8). Also, the first step of Fig. 6d should read 1% Pt(dba)3, 1.2% (R,R)-L1. These errors have been corrected in the online versions of the paper.