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Nickel-Catalyzed Carbon–Carbon Bond-Forming Reactions of Unactivated Tertiary Alkyl Halides: Suzuki Arylations
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TLDR
This approach to the synthesis of all-carbon quaternary carbon centers does not suffer from isomerization of the alkyl group, in contrast with the umpolung strategy for this bond construction.Abstract:
The first Suzuki cross-couplings of unactivated tertiary alkyl electrophiles are described. The method employs a readily accessible catalyst (NiBr2·diglyme/4,4′-di-tert-butyl-2,2′-bipyridine, both commercially available) and represents the initial example of the use of a group 10 catalyst to cross-couple unactivated tertiary electrophiles to form C–C bonds. This approach to the synthesis of all-carbon quaternary carbon centers does not suffer from isomerization of the alkyl group, in contrast with the umpolung strategy for this bond construction (cross-coupling of a tertiary alkylmetal with an aryl electrophile). Preliminary mechanistic studies are consistent with the generation of a radical intermediate along the reaction pathway.read more
Citations
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Controlling Ni redox states by dynamic ligand exchange for electroreductive Csp3–Csp2 coupling
TL;DR: In this paper , an electroreductive cross-electrophile coupling (XEC) of previously incompatible electrophiles including tertiary alkyl bromides, aryl chlorides, and triflates was investigated.
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Recent Advances in C(sp3)–C(sp3) Cross-Coupling Chemistry: A Dominant Performance of Nickel Catalysts
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Cooperative triple catalysis enables regioirregular formal Mizoroki–Heck reactions
TL;DR: In this paper , the authors describe an intermolecular α-arylation of electron-poor alkenes through cooperative nickel, photoredox and sulfinate catalysis, which operates under mild conditions and features excellent functional group tolerance.
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Tunable Unsymmetrical Ferrocene Ligands Bearing a Bulky Di-1-adamantylphosphino Motif for Many Kinds of Csp2–Csp3 Couplings
TL;DR: In this article , a class of ferrocene-based unsymmetrical bidentate ligands containing a di(1-adamantyl)phosphino group, Fc(PAd2)(PR2) abbreviated as MPhos ligands, and their corresponding (MPhos)PdCl2 pre-catalysts were synthesized in very good yields and fully characterized using techniques including single-crystal X-ray crystallography.
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