Selective C-C Bond Scission of Ketones via Visible-Light-Mediated Cerium Catalysis
作者:Yilin Chen、Jianbo Du、Zhiwei Zuo
DOI:10.1016/j.chempr.2019.11.009
日期:2020.1
catalytic manifold for the selectiveC–Cbond scission of ketones via the exploitation of the ligand-to-metal charge transfer (LMCT) excitation mode. Through a cooperative utilization of Lewis acid catalysis and LMCT catalysis, the C–Cbond of ketones could be selectively and effectively cleaved, enabling the installation of different functionalities at each carbon of the cleaved C–Cbond through a sequential
Brønsted Base-Modulated Regioselective Pd-Catalyzed Intramolecular Aerobic Oxidative Amination of Alkenes: Formation of Seven-Membered Amides and Evidence for Allylic C−H Activation
作者:Liang Wu、Shuifa Qiu、Guosheng Liu
DOI:10.1021/ol900941t
日期:2009.6.18
A novelpalladium-catalyzed intramolecular aerobic oxidative allylic C−H amination of olefins has been developed. Brønsted base can modulate the regioselectivity, favoring the formation of 7-membered rings. Mechanistic studies using deuterium-labeled substrates as probes support a rate-determining allylic C−H activation/irreversible reductive elimination pathway.