Mg–Cu bimetal system for selective CF bond activation
摘要:
Bimetal system of Mg-CuCl I in DMI for selective C-F and C-Cl bonds activation has been examined. This article involves (1) a short overview of bimetal system of Mg-metals for selective C-F bond activation, (2) C-F bond activation of alkyl trifluoroacetates leading to alkyl difluoro(trimethylsilyl)acetates via difluoroketene silyl acetal, (3) selective C-Cl bond activation of 3- and 4-chloropentafluoroethylbenzenes, (4) C-F bond activation of substituted benzotrifluorides and (5) microscopic observation of an active site of magnesium surface formed in Mg-CuCl system and elucidation of reaction mechanism of C-Cl and C-F bond activation at the active site. (C) 2013 Elsevier B.V. All rights reserved.
Cupration of C<sub>2</sub>F<sub>5</sub>H: Isolation, Structure, and Synthetic Applications of [K(DMF)<sub>2</sub>][(<i>t</i>-BuO)Cu(C<sub>2</sub>F<sub>5</sub>)]. Highly Efficient Pentafluoroethylation of Unactivated Aryl Bromides
作者:Anton Lishchynskyi、Vladimir V. Grushin
DOI:10.1021/ja407017j
日期:2013.8.28
Pentafluoroethane, C2F5H (HFC-125), is smoothly cuprated with preisolated or in situ-generated [K(DMF)][(t-BuO)(2)Cu] to give [K(DMF)(2)][(t-BuO)Cu(C2F5)] (1) in nearly quantitative yield. Complex 1 has been isolated, structurally characterized, and demonstrated to be an exceedingly versatile pentafluoroethylating reagent for a variety of substrates, including unactivated aryl bromides.
Cu-deposits on Mg metal surfaces promote electron transfer reactions
作者:Shinya Utsumi、Toshimasa Katagiri、Kenji Uneyama
DOI:10.1016/j.tet.2011.11.082
日期:2012.1
The enhancement of the electron transfer processes in the Grignard reagent formation-type ring silylation and the defluorination-silylation of perfluoroalkyl benzenes by Cu(0)-deposited Mg metal were confirmed. Microscopic analysis and substituent effects implied a different reduction process in the presence of Cu-deposited Mg metal than in the presence of bare Mg metal. (C) 2011 Elsevier Ltd. All rights reserved.
CARR, GILLIAN E.;CHAMBERS, RICHARD D.;HOLMES, THOMAS F.;PARKER, DAVID G., J. CHEM. SOC. PERKIN TRANS. PT 1,(1988) N 4, 921-926
作者:CARR, GILLIAN E.、CHAMBERS, RICHARD D.、HOLMES, THOMAS F.、PARKER, DAVID G.