Copper-mediated trifluoromethylation of propiolic acids: facile synthesis of α-trifluoromethyl ketones
作者:Zhengbiao He、Rui Zhang、Mingyou Hu、Lingchun Li、Chuanfa Ni、Jinbo Hu
DOI:10.1039/c3sc51613j
日期:——
Copper-mediated decarboxylative trifluoromethylation provides a new protocol for the efficient preparation of α-trifluoromethyl ketones from propiolic acids. It was found that water is involved as a reactant in the reaction, which is significantly different from the previously reported decarboxylative fluoroalkylation reactions.
Photoredox Catalysis: A Mild, Operationally Simple Approach to the Synthesis of α-Trifluoromethyl Carbonyl Compounds
作者:Phong V. Pham、David A. Nagib、David W. C. MacMillan
DOI:10.1002/anie.201101861
日期:2011.6.27
A facile and efficient method for the α‐trifluoromethylation of carbonylcompounds and enolsilanes has been accomplished through application of a photoredox catalysis strategy. A one‐flask procedure for the direct α‐trifluoromethylation and α‐perfluoroalkylation of ketone, amide, and ester substrates as well as silylketene acetals is described (see scheme).
作者:Petr Novák、Anton Lishchynskyi、Vladimir V. Grushin
DOI:10.1021/ja307783w
日期:2012.10.3
The C-X bond (X = Br, Cl) of α-haloketones is smoothly trifluoromethylated with the fluoroform-derived CuCF(3) reagent recently developed in our laboratories. This is the first nucleophilic α-trifluoromethylation reaction of carbonyl compounds and a rare example of CF(3)-C(sp(3)) coupling. The transformation employs only low-cost chemicals and cleanly occurs in up to 99% yield at room temperature,
Synthesis of α-Trifluoromethyl Ketones via the Cu-Catalyzed Trifluoromethylation of Silyl Enol Ethers Using an Electrophilic Trifluoromethylating Agent
作者:Lun Li、Qing-Yun Chen、Yong Guo
DOI:10.1021/jo500713f
日期:2014.6.6
A method has been developed for the synthesis of α-trifluoromethyl ketones via the Cu-catalyzed trifluoromethylation of silyl enol ethers with an electrophilic trifluoromethylating agent, which produces a trifluoromethyl radical.