期刊
CHEMCATCHEM
卷 9, 期 11, 页码 2009-2017出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201700400
关键词
amides; density functional calculations; hydrosilylation; iridium; metallacycles
资金
- University of Lille 1
- CNRS
- Region Hauts-de-France
- Chevreul Institute [FR 2638]
- Ministere de l'Enseignement Superieur et de la Recherche
- LABEX Chimie des Systemes Complexes (Strasbourg)
- FEDER
Readily accessible cationic Ir-III metallacycles catalyze efficiently the chemoselective hydrosilylation of tertiary and secondary amides to amines. The catalyst described herein operates at low loadings using inexpensive 1,1,3,3-tetramethyldisiloxane and allows fast reactions with high yields, selectivities, and turnover numbers. A transient iminium intermediate has been observed for the first time by using mass spectrometry, and the activation of the catalyst and the silane reagent have been studied by using DFT calculations. These fundamental insights support the present and future improvements of Ir-III metallacycles through proper ligand modifications and enable further broad applications of catalysts based on metallacycles.
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