The base metal-catalyzed C À Nc ross-coupling of bulky a,a,a-trisubstituted primary alkylamines with (hetero)aryl electrophiles represents ac hallenging and under-developed class of transformations that is of significant potential utility,i ncluding in the synthesis of lipophilic active pharmaceutical ingredients.H erein, we report that an ew,a ir-stable Ni(II) pre-catalyst incorporating the optimizedancillary ligand PhPAd-DalPhos enables such transformations of (hetero)aryl chloride,b romide,a nd tosylate electrophiles to be carried out for the first time with substrate scope rivalling that achieved using state-of-the-art Pd catalysts,including room temperature cross-couplings of (hetero)aryl chlorides that are unprecedented for any catalyst (Pd, Ni, or other).
The base metal‐catalyzed C−N cross‐coupling of bulky α,α,α‐trisubstituted primary alkylamines with (hetero)aryl electrophiles represents a challenging and under‐developed class of transformations that is of significant potential utility, including in the synthesis of lipophilic active pharmaceutical ingredients. Herein, we report that a new, air‐stable Ni(II) pre‐catalyst incorporating the optimized ancillary ligand PhPAd‐DalPhos enables such transformations of (hetero)aryl chloride, bromide, and tosylate electrophiles to be carried out for the first time with substrate scope rivalling that achieved using state‐of‐the‐art Pd catalysts, including room temperature cross‐couplings of (hetero)aryl chlorides that are unprecedented for any catalyst (Pd, Ni, or other).
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