Fluorosilane Activation by Pd/NiâSi-FâLewis Acid Interaction: An Entry to Catalytic Sila-Negishi Coupling.
J Am Chem Soc
; 142(33): 14039-14044, 2020 08 19.
Article
em En
| MEDLINE
| ID: mdl-32709201
ABSTRACT
A new mode of bond activation involving MâZ interactions is disclosed. Coordination to transition metals as σ-acceptor ligands was found to enable the activation of fluorosilanes, opening the way to the first transition-metal-catalyzed Si-F bond activation. Using phosphines as directing groups, sila-Negishi couplings were developed by combining Pd and Ni complexes with external Lewis acids such as MgBr2. Several key catalytic intermediates have been authenticated spectroscopically and crystallographically. Combined with DFT calculations, all data support cooperative activation of the fluorosilane via Pd/NiâSi-FâLewis acid interaction with conversion of the Z-type fluorosilane ligand into an X-type silyl moiety.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Japão