title: How does electrostatic activation control iminium-catalyzed cyclopropanations?
abstract: Prediction of lg k = s(N+E) verified: In contrast to previous statements, ordinary alpha,beta-unsaturated iminium ions do react with sulfur ylides. Electrostatic interactions accelerate the reactions by a factor of more than 10(5) and are responsible for the high stereoselectivity.
authors.affiliation: Department Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377 München, Germany.
authors.forename: Sami
authors.initials: S
authors.lastname: Lakhdar
authors.forename: Roland
authors.initials: R
authors.lastname: Appel
authors.forename: Herbert
authors.initials: H
authors.lastname: Mayr
mesh_terms: D002384:Catalysis; D003500:Cyclization; D007097:Imines / Q000737:chemistry*; D007700:Kinetics; D055672:Static Electricity; D013237:Stereoisomerism
chemical_list: D007097:Imines