Copper-Catalyzed Site-Selective Intramolecular Amidation of Unactivated C(sp<sup>3</sup>)H Bonds
作者:Xuesong Wu、Yan Zhao、Guangwu Zhang、Haibo Ge
DOI:10.1002/anie.201311263
日期:2014.4.1
of aliphatic amides, directed by a bidentate ligand, was developed using a copper‐catalyzed sp3 CH bond functionalization process. The reaction favors predominantly the CHbonds of β‐methyl groups over the unactivated methylene CHbonds. Moreover, a preference for activating sp3 CHbonds of β‐methyl groups, via a five‐membered ring intermediate, over the aromatic sp2 CHbonds was also observed in
Nickel-Catalyzed Site-Selective Amidation of Unactivated C(sp<sup>3</sup>)H Bonds
作者:Xuesong Wu、Yan Zhao、Haibo Ge
DOI:10.1002/chem.201403356
日期:2014.7.28
nickel‐catalyzed CH bond functionalization process with the assistance of a bidentatedirectinggroup. The reaction favors the CHbonds of β‐methyl groups over the γ‐methyl or β‐methylene groups. Additionally, a predominant preference for the β‐methyl CHbonds over the aromatic sp2 CHbonds was observed. Moreover, this process also allows for the effective functionalization of benzylic secondary sp3 CH bonds
Copper-Catalyzed Intramolecular Dehydrogenative Amidation of Unactivated C(sp<sup>3</sup>)–H Bonds Using O<sub>2</sub> as the Sole Oxidant
作者:Chunxia Wang、Yudong Yang、Dekun Qin、Zhen He、Jingsong You
DOI:10.1021/acs.joc.5b01302
日期:2015.8.21
In this work, an aerobic copper-catalyzedintramolecularC(sp3)–H amidation has been disclosed, which presents a rare example of copper-catalyzed functionalization of an unactivatedC(sp3)–H bond with O2 as the sole oxidant. In addition, a new protocol for the preparation of a removable 5-methoxyquinolyl moiety has been documented.