Rare‐Earth Metal Alkyl Complexes Featuring Bridged Bis(β‐Diketiminato) Ligand: Synthesis, Structure, and Catalytic Activity for Intramolecular Hydroamination Reaction DOI
Chaoqun Wang,

Mengna Huang,

Hui Miao

et al.

Applied Organometallic Chemistry, Journal Year: 2025, Volume and Issue: 39(1)

Published: Jan. 1, 2025

ABSTRACT A series of rare‐earth metal alkyl complexes containing chiral cyclohexyl‐bridged bis( β ‐diketiminate) ligands have been synthesized, with a general chemical formula {Cy[NC (Me)CHC (Me)NAr] 2 }RECH SiMe 3 [Cy=(1R, 2R)‐(‐)‐1,2‐cyclohexyl, Ar=2,6‐ i Pr C 6 H , RE=Dy( 1 ), Er( Yb( Y( 4 )]. These compounds were prepared in good yields by the reaction RE[CH ] (THF) Cy[NHC ( L ). Comprehensive characterizations all achieved through spectroscopic methods and elemental analysis. The structures Compounds – determined single‐crystal x‐ray diffraction analysis, Compound was further characterized hydrogen‐1 H) NMR carbon‐13 13 C) spectroscopy. catalytic performance these investigated, their ability to catalyze hydroamination/cyclization aminoalkenes afford corresponding cyclic amines proven. resulting heterocyclic predominantly Markovnikov addition products. efficiency different catalysts not significantly affected central metal, over 90% conversion could be catalyst loading as low 3%. However, six‐membered ring products found more challenging compared formation five‐membered rings.

Language: Английский

Rare‐Earth Metal Alkyl Complexes Featuring Bridged Bis(β‐Diketiminato) Ligand: Synthesis, Structure, and Catalytic Activity for Intramolecular Hydroamination Reaction DOI
Chaoqun Wang,

Mengna Huang,

Hui Miao

et al.

Applied Organometallic Chemistry, Journal Year: 2025, Volume and Issue: 39(1)

Published: Jan. 1, 2025

ABSTRACT A series of rare‐earth metal alkyl complexes containing chiral cyclohexyl‐bridged bis( β ‐diketiminate) ligands have been synthesized, with a general chemical formula {Cy[NC (Me)CHC (Me)NAr] 2 }RECH SiMe 3 [Cy=(1R, 2R)‐(‐)‐1,2‐cyclohexyl, Ar=2,6‐ i Pr C 6 H , RE=Dy( 1 ), Er( Yb( Y( 4 )]. These compounds were prepared in good yields by the reaction RE[CH ] (THF) Cy[NHC ( L ). Comprehensive characterizations all achieved through spectroscopic methods and elemental analysis. The structures Compounds – determined single‐crystal x‐ray diffraction analysis, Compound was further characterized hydrogen‐1 H) NMR carbon‐13 13 C) spectroscopy. catalytic performance these investigated, their ability to catalyze hydroamination/cyclization aminoalkenes afford corresponding cyclic amines proven. resulting heterocyclic predominantly Markovnikov addition products. efficiency different catalysts not significantly affected central metal, over 90% conversion could be catalyst loading as low 3%. However, six‐membered ring products found more challenging compared formation five‐membered rings.

Language: Английский

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