From Alkyl Halides to Ketones: Nickel‐Catalyzed Reductive Carbonylation Utilizing Ethyl Chloroformate as the Carbonyl Source
作者:Renyi Shi、Xile Hu
DOI:10.1002/anie.201903330
日期:2019.5.27
remains in high demand. Described here is a nickel‐catalyzed three‐component reductive carbonylation method for the synthesis of dialkyl ketones. A wide range of both symmetric and asymmetric dialkyl ketones can be accessed from alkyl halides and a safe CO source, ethyl chloroformate. The approach offers complementary substrate scope to existing carbonylation methods while avoiding the use of either toxic
has recently been generated from hypervalent iodine precursors via photoredox catalysis. Given the underexplored chemistry of carbyne, due to the paucity of carbyne sources, we are intrigued to discover a new source for this reactive species from classical reagents – phosphonium ylides. Our novel strategy employing phosphonium ylides in an olefin hydrocarbonation reaction features a facile approach
Aerobic Oxidative Dehydrogenation of Ketones to 1,4-Enediones
作者:Bao-Yin Zhao、Xing-Long Zhang、Rui-Li Guo、Meng-Yue Wang、Ya-Ru Gao、Yong-Qiang Wang
DOI:10.1021/acs.orglett.0c04174
日期:2021.2.19
An efficient and unprecedented strategy for the synthesis of 1,4-enediones from saturated ketones has been developed via palladium-catalyzedoxidativedehydrogenation. The protocol employs molecular oxygen as the sole oxidant and represents an atom- and step-economic process. The approach showed broad substrate scope, good functional group tolerance, and complete E-stereoselectivity. The reaction mechanism
One-Pot Synthesis of Ketones Using<i>N</i>-Methoxy-<i>N</i>-Methyl-2-Pyridyl Urethane
作者:Na Ra Lee、Jae In Lee
DOI:10.1080/00397919908086099
日期:1999.4
Abstract The one-pot reaction of N-methoxy-N-methyl-2-pyridyl urethane with Grignard and organolithium reagents provided an efficient method for the preparation of unsymmetrical ketones.