(MeDalphos)AuCl络合物通过Au I / Au III催化可有效实现烯烃与芳基碘的杂芳基化反应。首次证明了在金中结合芳基碘化物的氧化加成和烯烃的π-活化的可能性。该反应牢固且通用(> 30个实例,包括内部烯烃,5元,6元和7元环)。它是区域选择性的,专门导致反式加成产物。(P,N)金络合物在富电子芳基底物方面效率最高,这对于其他光氧化还原/氧化方法来说是麻烦的。此外,它还提供了从5外向内向6内向区域选择性的非常不同的转换 内部烯醇的Z和E异构体之间的环化。
Palladium-Catalyzed Alkene Carboamination Reactions of Electron-Poor Nitrogen Nucleophiles
作者:Luke J. Peterson、John P. Wolfe
DOI:10.1002/adsc.201500334
日期:2015.7.6
Modified reaction conditions that facilitate Pd‐catalyzed alkene carboamination reactions of electron‐deficient nitrogennucleophiles are reported. Pent‐4‐enylamine derivatives bearing N‐tosyl or N‐trifluoroacetyl groups are coupled with aryl triflates to afford substituted pyrrolidines in good yield. These reactions proceed via a mechanism involving anti‐aminopalladation of the alkene, which differs
Gold-Catalyzed Intramolecular Aminoarylation of Alkenes: CC Bond Formation through Bimolecular Reductive Elimination
作者:William E. Brenzovich、Diego Benitez、Aaron D. Lackner、Hunter P. Shunatona、Ekaterina Tkatchouk、William A. Goddard、F. Dean Toste
DOI:10.1002/anie.201002739
日期:——
Gold‐ilocks and the 3 mol % catalyst: Bimetallic gold bromides allow the room temperature aminoarylation of unactivated terminal olefins with aryl boronic acids using Selectfluor as an oxidant. A catalytic cycle involving gold(I)/gold(III) and a bimolecular reductive elimination for the key CC bond‐forming step is proposed. dppm= bis(diphenylphosphanyl)methane.
Rhodium(III)‐Catalyzed Allylic C(sp
<sup>3</sup>
)–H Activation of Alkenyl Sulfonamides: Unexpected Formation of Azabicycles
作者:Alexis Archambeau、Tomislav Rovis
DOI:10.1002/anie.201504150
日期:2015.11.2
Unsaturated N‐sulfonamides undergo a RhIII‐ catalyzedallylicC(sp3)H activation followed by insertion with an exogenous internal alkyne. The reaction generates [3.3.0], [4.3.0], and [5.3.0] azabicyclic structures with excellent diastereoselectivity. Deuterium labeling experiments implicate a 1,3‐Rh shift as a key step in the mechanism.
Combining Gold and Photoredox Catalysis: Visible Light-Mediated Oxy- and Aminoarylation of Alkenes
作者:Basudev Sahoo、Matthew N. Hopkinson、Frank Glorius
DOI:10.1021/ja400311h
日期:2013.4.17
A room-temperature intramolecular oxy- and aminoarylation of alkenes with aryldiazonium salts has been developed using a novel gold and photoredox dual-catalytic system. The compatibility of these two catalytic modes has been established for the first time and demonstrates the potential of this system as a method to expand the scope of nucleophilic addition reactions to carbon-carbon multiple bonds
Homogeneous Gold-Catalyzed Oxidative Carboheterofunctionalization of Alkenes
作者:Guozhu Zhang、Li Cui、Yanzhao Wang、Liming Zhang
DOI:10.1021/ja909555d
日期:2010.2.10
Homogeneous carboamination, carboalkoxylation and carbolactonization of terminal alkenes are realized via oxidative gold catalysis, providing expedient access to various Substituted N- or O-heterocycles. Deuterium-labeling studies established the anti nature of the alkene functionalization and the indispensible role of Au(I)/Au(III) catalysis. This study constitutes the first example of catalytically converting C(sp(3))-Au bonds into C(sp(3))--C(sp(2)) bonds in a cross-coupling manner and opens new opportunities to Study gold alkene catalysis where alkylgold intermediates can be readily functionalized intermolecularly.