Catalytic Functionalization of Unactivated sp<sup>3</sup> C–H Bonds via <i>exo</i>-Directing Groups: Synthesis of Chemically Differentiated 1,2-Diols
作者:Zhi Ren、Fanyang Mo、Guangbin Dong
DOI:10.1021/ja3082186
日期:2012.10.17
describe a Pd-catalyzed site-selective functionalization of unactivated aliphatic C-H bonds, providing chemically differentiated 1,2-diols from monoalcohol derivatives. The oxime was employed as both a directing group (DG) and an alcohol surrogate for this transformation. As demonstrated in a range of substrates, the C-H bonds β to the oxime group are selectively oxidized. Besides activation of the methyl
Iridium‐Catalyzed β‐Alkynylation of Aliphatic Oximes as Masked Carbonyl Compounds and Alcohols
作者:Eric Tan、Margherita Zanini、Antonio M. Echavarren
DOI:10.1002/anie.202002948
日期:2020.6.22
An Ir‐catalyzed C(sp3)−H alkynylation of aliphatic ketones, aldehydes, and alcohols was achieved by using the corresponding oxime derivatives and a IrIII catalyst. This general reaction is selective towards primary C(sp3)−H bonds and can be used for the late‐stage C−H alkynylation of complex molecules.
Palladium-catalyzed intermolecular amination of unactivated C(sp<sup>3</sup>)–H bonds via a cleavable directing group
作者:Lianwen Jin、Xiaoli Zeng、Siyang Li、Xuechuan Hong、Guofu Qiu、Peng Liu
DOI:10.1039/c7cc00808b
日期:——
Cleavable directing group promoted palladium-catalyzed intermolecularamination of unactivatedC(sp3)-Hbonds with NFSI as the amino source was developed.