title: Iron and Manganese Catalysts for the Selective Functionalization of Arene C(sp(2) )-H Bonds by Carbene Insertion.
abstract: The first examples of the direct functionalization of non-activated aryl sp(2) C-H bonds with ethyl diazoacetate (N2 CHCO2 Et) catalyzed by Mn- or Fe-based complexes in a completely selective manner are reported, with no formation of the frequently observed cycloheptatriene derivatives through competing Buchner reaction. The best catalysts are Fe(II) or Mn(II) complexes bearing the tetradentate pytacn ligand (pytacn= 1-(2-pyridylmethyl)-4,7-dimethyl-1,4,7-triazacyclononane). When using alkylbenzenes, the alkylic C(sp(3) )-H bonds of the substituents remained unmodified, thus the reaction being also selective toward functionalization of sp(2) C-H bonds.
authors.affiliation: Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, Campus de El Carmen s/n, 21007, Huelva, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Conde
authors.affiliation: Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain.
authors.forename: Gerard
authors.initials: G
authors.lastname: Sabenya
authors.affiliation: Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain.
authors.forename: Mònica
authors.initials: M
authors.lastname: Rodríguez
authors.affiliation: Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain.
authors.forename: Verònica
authors.initials: V
authors.lastname: Postils
authors.affiliation: Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain.
authors.forename: Josep M
authors.initials: JM
authors.lastname: Luis
authors.affiliation: Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, Campus de El Carmen s/n, 21007, Huelva, Spain. mmdiaz@dqcm.uhu.es.
authors.forename: M Mar
authors.initials: MM
authors.lastname: Díaz-Requejo
authors.affiliation: Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, 17071, Girona, Spain. miquel.costas@udg.edu.
authors.forename: Miquel
authors.initials: M
authors.lastname: Costas
authors.affiliation: Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, Campus de El Carmen s/n, 21007, Huelva, Spain. perez@dqcm.uhu.es.
authors.forename: Pedro J
authors.identifier: 0000-0002-6899-4641
authors.initials: PJ
authors.lastname: Pérez
keywords: C−H activation; arenes; carbene; iron; manganese