title: Direct Aerobic Carbonylation of C(sp²)-H and C(sp³)-H Bonds through Ni/Cu Synergistic Catalysis with DMF as the Carbonyl Source.
abstract: The direct carbonylation of aromatic sp(2) and unactivated sp(3) C-H bonds of amides was achieved via nickel/copper catalysis under atmospheric O2 with the assistance of a bidentate directing group. The sp(2) C-H functionalization showed high regioselectivity and good functional group compatibility. The sp(3) C-H functionalization showed high site-selectivity by favoring the C-H bonds of α-methyl groups over those of the α-methylene, β- or γ-methyl groups. Moreover, this reaction showed a predominant preference for functionalizing the α-methyl over α-phenyl group. Mechanistic studies revealed that nickel/copper synergistic catalysis is involved in this process.
authors: Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States.
authors: Xuesong
authors: X
authors: Wu
authors: Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States.
authors: Yan
authors: Y
authors: Zhao
authors: Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, United States.
authors: Haibo
authors: H
authors: Ge