Distinct Reactivity Modes of a Copper Hydride Enabled by an Intramolecular Lewis Acid
Emily E. Norwine, John J. Kiernicki, Matthias Zeller, Nathaniel K. Szymczak
Abstract
We disclose a 1,4,7-triazacyclononane (TACN) ligand featuring an appended boron Lewis acid. Metalation with Cu(I) affords a series of tetrahedral complexes including a boron-capped cuprous hydride. We demonstrate distinct reactivity modes as a function of chemical oxidation: hydride transfer to CO2 in the copper(I) state and oxidant-induced H2 evolution as well as alkyne reduction.
Topics & Concepts
ChemistryReactivity (psychology)HydrideMetalationIntramolecular forceAlkyneLewis acids and basesBoronCopperLigand (biochemistry)Inorganic chemistryPhotochemistryMedicinal chemistryStereochemistryOrganic chemistryHydrogenCatalysisPathologyMedicineAlternative medicineBiochemistryReceptorCarbon dioxide utilization in catalysisAsymmetric Hydrogenation and CatalysisOrganoboron and organosilicon chemistry