Pd-catalyzed arylation of silyl enol ethers of substituted α-fluoroketones
作者:Yong Guo、Brendan Twamley、Jean'ne M. Shreeve
DOI:10.1039/b900311h
日期:——
the Pd-catalyzed cross-coupling of aryl bromides with either α-fluoroketones or their corresponding silyl enol ethers. The direct arylation with an α-fluoroketone requires a strong base, such as potassium tert-butoxide, and under these conditions the presence of a base-sensitive functional group is not compatible. However, good functional tolerance was achieved when the anionic coupling moieties were
Palladium-catalyzed direct α-arylation of α-fluoroketones: A straightforward route to α-fluoro-α-arylketones
作者:Chen Guo、Ruo-Wen Wang、Yong Guo、Feng-Ling Qing
DOI:10.1016/j.jfluchem.2011.08.004
日期:2012.1
The palladium-catalyzed direct alpha-arylation of both open-chain and cyclic alpha-fluoroketones by using P(o-tolyl)(3) or RuPhos as ligand and K3PO4 center dot 3H(2)O as mild base has been developed. This method allows a variety of quaternary alpha-aryl-alpha-fluoroketones to be easily prepared. (C) 2011 Elsevier B.V. All rights reserved.
<i>p</i>-Toluenesulfonic acid catalysed fluorination of α-branched ketones for the construction of fluorinated quaternary carbon centres
A p-toluenesulfonic acid catalyzed fluorination of α-branched ketones for the construction of fluorinated quaternary carbon centers has been developed, featuring a broad substrate scope, environmentally benign reaction conditions, and operational simplicity.