Correction: Synergistic formal ring contraction for the enantioselective synthesis of spiropyrazolones (Chemical Science (2018) 9 (6368-6373) DOI: 10.1039/C8SC00913A)

The authors regret that a citation related to a previous Michael addition/Trost allylation cascade reaction was omitted at the end of the sentence beginning "With the advent of organocatalysis." The full reference is presented herein as ref. 1. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.