Journal
CHEMISTRYSELECT
Volume 7, Issue 27, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202201404
Keywords
Carbene ligands; Palladium; Amine; Cross-coupling; Ligand effects
Categories
Funding
- Ministry of Science and Technology of Taiwan [MOST 109-2113-M-126-003-, 110-2113-M-126-003-MY2]
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The HSAB principle is applied in designing NHC Pd complexes in this study. N-donor ligands as hard bases enhance the catalytic activities of NHC Pd complexes in Suzuki and Buchwald-Hartwig reactions. The Pd complex with tertiary amine ligands exhibits better performance in coupling reactions.
The HSAB principle in designing Bis(imino)acenaphthene N-heterocyclic carbene (NHC) palladium complexes is presented. N-donor ligands serve as hard bases to enhance the catalytic activities of NHC Pd complexes in Suzuki and Buchwald-Hartwig amination reactions. The Pd complex bearing tertiary amine ligands exhibited higher performance in coupling reactions than those exhibited by other soft base ligands reported in literature. 48 coupling products were generated in moderate-to-complete yields in the presence of aryl chlorides as substrates for Suzuki and amination reactions in air under mild conditions.
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