期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 7, 页码 3355-3366出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202011825
关键词
catalysis; cross-coupling; dinuclear Pd-I; palladium; pre-catalyst
资金
- European Research Council
- Max Planck School Matter to Life
- RWTH Aachen University
- Projekt DEAL
Dinuclear Pd-I complexes have diverse applications as catalysts, triggering privileged reactivities and couplings that would not engage in Pd-0/Pd-II catalysis. Research focuses on mechanistic intricacies, speciation, and impacts on reactivity.
Dinuclear Pd-I complexes have found widespread applications as diverse catalysts for a multitude of transformations. Initially their ability to function as pre-catalysts for low-coordinated Pd-0 species was harnessed in cross-coupling. Such Pd-I dimers are inherently labile and relatively sensitive to oxygen. In recent years, more stable dinuclear Pd-I-Pd-I frameworks, which feature bench-stability and robustness towards nucleophiles as well as recoverability in reactions, were explored and shown to trigger privileged reactivities via dinuclear catalysis. This includes the predictable and substrate-independent, selective C-C and C-heteroatom bond formations of poly(pseudo)halogenated arenes as well as couplings of arenes with relatively weak nucleophiles, which would not engage in Pd-0/Pd-II catalysis. This Minireview highlights the use of dinuclear Pd-I complexes as both pre-catalysts for the formation of highly active Pd-0 and Pd-II-H species as well as direct dinuclear catalysts. Focus is set on the mechanistic intricacies, the speciation and the impacts on reactivity.
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