Articles producció científica> Química Física i Inorgànica

Two Copper-Carbenes from One Diazo Compound

  • Datos identificativos

    Identificador: imarina:9182606
    Autores:
    Alvarez, MariaBesora, MariaMolina, FranciscoMaseras, FeliuBelderrain, Tomas R.Perez, Pedro J.
    Resumen:
    Many transition-metal complexes MLn decompose diazo compounds N-2=(CRR2)-R-1 generating metal-carbenes LnM=(CRR2)-R-1 which transfer the carbene group to other substrates, constituting an important tool in organic synthesis. All previous reports have shown that the (CRR2)-R-1 fragment at the metal-carbene remains intact from the parent diazo compound. Herein we report the detection and isolation of a monosubstituted copper carbene where the (CRR2)-R-1 ligand has undergone a modification from the initial diazo reagent. When Tp(Ms)Cu(THF) (Tp(Ms) = hydrotris(3-mesityl)pyrazolylborate ligand) was reacted with N,N-diethyl diazoacetamide [N-2=C(H)(CONEt2)], the stable copper carbene Tp(Ms)Cu=C(H)(NEt2) was isolated, resulting from a decarbonylation process, with carbon monoxide being trapped as Tp(Ms)Cu(CO). The simultaneous observation of products derived from the intramolecular carbene insertion reaction into C-H bonds demonstrates that the expected Tp(Ms)Cu=C(H)(CONEt2) complex is also formed. Experimental data, DFT calculations, and microkinetic models allow us to propose that the latter undergoes CO loss en route to the former.
  • Otros:

    Autor según el artículo: Alvarez, Maria; Besora, Maria; Molina, Francisco; Maseras, Feliu; Belderrain, Tomas R.; Perez, Pedro J.;
    Departamento: Química Física i Inorgànica
    e-ISSN: 1520-5126
    Autor/es de la URV: Besora Bonet, Maria
    Palabras clave: Transition metals Synthesis (chemical) Simultaneous observation Reagent Organic synthesis Organic compounds Microkinetic models Metal complexes Metal complex Metal carbenes Ligands Ligand Kinetics Hydrogen bond Hydrogen Diazo compounds Dft calculation Density functional theory Decarbonylations Decarbonylation Copper compounds Copper Chemical modification Carbon monoxide Carbon Carbene insertion Carbene Calculation Article
    Resumen: Many transition-metal complexes MLn decompose diazo compounds N-2=(CRR2)-R-1 generating metal-carbenes LnM=(CRR2)-R-1 which transfer the carbene group to other substrates, constituting an important tool in organic synthesis. All previous reports have shown that the (CRR2)-R-1 fragment at the metal-carbene remains intact from the parent diazo compound. Herein we report the detection and isolation of a monosubstituted copper carbene where the (CRR2)-R-1 ligand has undergone a modification from the initial diazo reagent. When Tp(Ms)Cu(THF) (Tp(Ms) = hydrotris(3-mesityl)pyrazolylborate ligand) was reacted with N,N-diethyl diazoacetamide [N-2=C(H)(CONEt2)], the stable copper carbene Tp(Ms)Cu=C(H)(NEt2) was isolated, resulting from a decarbonylation process, with carbon monoxide being trapped as Tp(Ms)Cu(CO). The simultaneous observation of products derived from the intramolecular carbene insertion reaction into C-H bonds demonstrates that the expected Tp(Ms)Cu=C(H)(CONEt2) complex is also formed. Experimental data, DFT calculations, and microkinetic models allow us to propose that the latter undergoes CO loss en route to the former.
    Áreas temáticas: Química Materiais Interdisciplinar General chemistry Farmacia Engenharias iv Engenharias iii Engenharias ii Colloid and surface chemistry Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemistry Catalysis Biochemistry Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0002-7863
    Direcció de correo del autor: maria.besora@urv.cat
    Identificador del autor: 0000-0002-6656-5827
    Fecha de alta del registro: 2024-07-27
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://pubs.acs.org/doi/10.1021/jacs.1c01483
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Journal Of The American Chemical Society. 143 (12): 4837-4843
    Referencia de l'ítem segons les normes APA: Alvarez, Maria; Besora, Maria; Molina, Francisco; Maseras, Feliu; Belderrain, Tomas R.; Perez, Pedro J.; (2021). Two Copper-Carbenes from One Diazo Compound. Journal Of The American Chemical Society, 143(12), 4837-4843. DOI: 10.1021/jacs.1c01483
    DOI del artículo: 10.1021/jacs.1c01483
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2021
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Biochemistry,Catalysis,Chemistry,Chemistry (Miscellaneous),Chemistry, Multidisciplinary,Colloid and Surface Chemistry
    Transition metals
    Synthesis (chemical)
    Simultaneous observation
    Reagent
    Organic synthesis
    Organic compounds
    Microkinetic models
    Metal complexes
    Metal complex
    Metal carbenes
    Ligands
    Ligand
    Kinetics
    Hydrogen bond
    Hydrogen
    Diazo compounds
    Dft calculation
    Density functional theory
    Decarbonylations
    Decarbonylation
    Copper compounds
    Copper
    Chemical modification
    Carbon monoxide
    Carbon
    Carbene insertion
    Carbene
    Calculation
    Article
    Química
    Materiais
    Interdisciplinar
    General chemistry
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Colloid and surface chemistry
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Ciência de alimentos
    Chemistry, multidisciplinary
    Chemistry (miscellaneous)
    Chemistry (all)
    Chemistry
    Catalysis
    Biochemistry
    Astronomia / física
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