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Palladium‐catalyzed allylic substitution reactions are among the most efficient methods to construct C−C bonds between sp3‐hybridized carbon atoms. In contrast, much less work has been done with nickel catalysts, perhaps because of the different mechanisms of the allylic substitution reactions. Palladium catalysts generally undergo substitution by a “soft”‐nucleophile pathway, wherein the nucleophile...
Ligand im Heuhaufen: Bei der Titelreaktion von lithiierten Benzylsubstraten mit tertiären Aminfunktionen in α‐Stellung wird die benzylische C‐H‐Bindung durch {Cr(CO)3}‐Komplexierung aktiviert. Die anschließende Pd‐katalysierte Kupplung mit Aryltriflaten (ArOTf) ergibt über eine neuartige dynamische kinetische Racematspaltung die enantiomerenangereicherten Diarylmethylamine. Der chirale Ligand...
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