title: Intermolecular copper-catalyzed carbon [bond] hydrogen bond activation via carbene insertion.
abstract: A series of catalysts of general formula TpXCu (TpX = homoscorpionate ligand) promote the insertion of :CHCO2Et (ethyl diazoacetate as the carbene source) into the C-H bonds of cycloalkanes and cyclic ethers in moderate to high yield. A correlation between the steric hindrance of these catalysts and the yield of the transformation has been observed.
authors.affiliation: Departamento de Química y Ciencia de Materiales, Universidad de Huelva, Carretera de Palos de la Frontera 21819-Huelva, Spain.
authors.forename: M Mar
authors.initials: MM
authors.lastname: Díaz-Requejo
authors.forename: Tomás R
authors.initials: TR
authors.lastname: Belderraín
authors.forename: M Carmen
authors.initials: MC
authors.lastname: Nicasio
authors.forename: Swiatoslaw
authors.initials: S
authors.lastname: Trofimenko
authors.forename: Pedro J
authors.initials: PJ
authors.lastname: Pérez