Nickel-Catalyzed Site-Selective Alkylation of Unactivated C(sp<sup>3</sup>)–H Bonds
作者:Xuesong Wu、Yan Zhao、Haibo Ge
DOI:10.1021/ja413131m
日期:2014.2.5
The direct alkylation of unactivated sp(3) C-H bonds of aliphatic amides was achieved via nickel catalysis with the assist of a bidentate directing group. The reaction favors the C-H bonds of methyl groups over the methylene C-H bonds and tolerates various functional groups. Moreover, this reaction shows a predominant preference for sp(3) C-H bonds of methyl groups via a five-membered ring intermediate