title: Zinc-catalyzed cyclopropenation of alkynes via 2-furylcarbenoids.
abstract: An unprecedented cyclopropenation reaction of alkynes catalyzed by ZnCl2 is reported. While Simmons-Smith-type carbenoids failed in the [2 + 1]-cycloaddition with alkynes, the use of enynones as the carbene source enables the preparation of substituted 2-furyl cyclopropene derivatives with remarkable scope.
authors.affiliation: Departamento de Química Orgánica e Inorgánica and Instituto de Química Organometálica "Enrique Moles", Universidad de Oviedo , C/Julián Clavería 8, 33006 Oviedo, Spain.
authors.forename: María J
authors.initials: MJ
authors.lastname: González
authors.forename: Luis A
authors.initials: LA
authors.lastname: López
authors.forename: Rubén
authors.initials: R
authors.lastname: Vicente