Gold(<scp>i</scp>)-catalyzed cross-coupling reactions of aryldiazonium salts with organostannanes
作者:Manjur O. Akram、Popat S. Shinde、Chetan C. Chintawar、Nitin T. Patil
DOI:10.1039/c8ob00630j
日期:——
Gold(I)-catalyzed cross-couplingreactions of aryldiazonium salts with organostannanes are described. This redox neutral strategy offers an efficient approach to diverse biaryls, vinyl arenes and arylacetylenes. Monitoring the reaction with NMR and ESI-MS provided strong evidence for the in situ formation of Ph3PAuIR (R = aryl, vinyl and alkynyl) species which is crucial for the activation of aryldiazonium
描述了金(I)催化的芳基重氮盐与有机锡烷的交叉偶联反应。这种氧化还原中性策略为各种联芳基,乙烯基芳烃和芳基乙炔提供了一种有效的方法。用NMR和ESI-MS监测反应为原位形成Ph 3 PAu I R(R =芳基,乙烯基和炔基)物种提供了有力证据,这对于激活芳基重氮盐至关重要。
Highly efficient palladium-catalyzed cross-coupling of diarylborinic acids with arenediazoniums for practical diaryl synthesis
作者:Fengze Wang、Chen Wang、Guoping Sun、Gang Zou
DOI:10.1016/j.tetlet.2019.151491
日期:2020.2
A highly efficient cross-coupling of cost-effective diarylborinic acids with both isolatable and latent arenediazoniums, i.e. tetrafluoroborates and aryltriazenes, respectively, has been developed with a practical palladium catalyst system under base-free conditions in open flask at room temperature. A variety of electronically and sterically various biaryls, in particular, those bearing a coordinative
The present invention relates to a process for the synthesis of 2-aminobiphenylene and derivatives thereof by reacting a benzene diazonium salt with an aniline compound under basic reaction conditions.
Asymmetric Hydrogenation of Ketones Using a Ruthenium(II) Catalyst Containing BINOL-Derived Monodonor Phosphorus-Donor Ligands
作者:Yingjian Xu、Nat W. Alcock、Guy J. Clarkson、Gordon Docherty、Gary Woodward、Martin Wills
DOI:10.1021/ol0481840
日期:2004.10.1
[structure: see text] A series of ruthenium(II) complexes containing BINOL-based monodonor phosphorus ligands have been prepared and applied to the asymmetric catalysis of the hydrogenation of aryl/alkyl ketones. The best ligands for this application are those which contain an aromatic groups with either a methoxide or bromide on the ortho position. Using these ligands, alcohols with ee's of up to
Aqueous and Visible-Light-Promoted C–H (Hetero)arylation of Uracil Derivatives with Diazoniums
作者:An-Di Liu、Zhao-Li Wang、Li Liu、Liang Cheng
DOI:10.1021/acs.joc.1c01799
日期:2021.12.3
Direct C5 (hetero)arylation of uracil and uridine substrates with (hetero)aryl diazoniumsalts under photoredox catalysis with blue light was reported. The coupling proceeds efficiently with diazoniumsalts and heterocycles in good functional group tolerance at room temperature in aqueous solution without transition-metal components. A plausible radical mechanism has been proposed.