title: Enantioselective organocatalytic cyclopropanation via ammonium ylides.
authors.affiliation: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
authors.forename: Charles D
authors.initials: CD
authors.lastname: Papageorgiou
authors.forename: Maria A
authors.initials: MA
authors.lastname: Cubillo de Dios
authors.forename: Steven V
authors.initials: SV
authors.lastname: Ley
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Gaunt