title: Hypervalent iodine(III) reagents as safe alternatives to alpha-nitro-alpha-diazocarbonyls.
abstract: A cyclopropanation reaction involving iodonium ylides generated in situ allows for efficient preparation of substituted 1-nitro-1-carbonyl cyclopropanes. This robust cyclopropanation reaction can be performed in organic solvents, biphasic aqueous media, or under solvent-free conditions with alkene substrates. The iodonium ylides generated in situ display some surprising differences in reactivity when compared to alpha-nitro-alpha-diazocarbonyl compounds. They do not undergo O-H insertion reactions and exhibit reduced reactivity with certain alkenes. [reaction: see text]
authors.affiliation: Département de chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada H3C 3J7.
authors.forename: Ryan P
authors.initials: RP
authors.lastname: Wurz
authors.forename: André B
authors.initials: AB
authors.lastname: Charette