Dual Photoredox and Gold Catalysis: Intermolecular Multicomponent Oxyarylation of Alkenes
作者:Matthew N. Hopkinson、Basudev Sahoo、Frank Glorius
DOI:10.1002/adsc.201400580
日期:2014.9.15
developed using a dual gold and photoredoxcatalytic system. Inexpensive organic dyes could be employed as the photocatalyst using aryldiazonium salts, while the combination of gold and iridium catalysts allowed for diaryliodonium compounds to be employed as the source of the arene coupling partner. In both cases, α‐arylated ether products were generated under remarkably mild conditions using readily accessible
Gold-Catalysed Oxyarylation of Styrenes and Mono- and<i>gem</i>-Disubstituted Olefins Facilitated by an Iodine(III) Oxidant
作者:Liam T. Ball、Guy C. Lloyd-Jones、Christopher A. Russell
DOI:10.1002/chem.201103061
日期:2012.3.5
1‐Hydroxy‐1,2‐benziodoxol‐3(1H)‐one (IBA) is an efficient terminal oxidant for gold‐catalysed, three‐component oxyarylation reactions. The use of this iodine(III) reagent expands the scope of oxyarylation to include styrenes and gem‐disubstituted olefins, substrates that are incompatible with the previously reported Selectfluor‐based methodology. Diverse arylsilane coupling partners can be employed
Arylsilanes: Application to Gold-Catalyzed Oxyarylation of Alkenes
作者:Liam T. Ball、Michael Green、Guy C. Lloyd-Jones、Christopher A. Russell
DOI:10.1021/ol1019162
日期:2010.11.5
Arylsilanes are efficient reagents for the gold-catalyzed oxyarylation of alkenes (21 examples, up to 85% isolated yield). Using commercially available Ph3PAuCl and readily prepared, benign arylsilanes, these two- and three-component reactions proceed smoothly in air. The oxidant, Selectfluor, not only facilitates entry to the Au(I/III) manifold but also provides a fluoride anion for silane activation, thereby avoiding the need for addition of a stoichiometric base.
Intermolecular Alkene Difunctionalization via Gold‐Catalyzed Oxyarylation
作者:Shuyao Zhang、Chenhuan Wang、Xiaohan Ye、Xiaodong Shi
DOI:10.1002/anie.202009636
日期:2020.11.9
The gold‐catalyzed intermolecular oxyarylation of alkenes is reported. This work employed the oxidative addition of aryl iodides to Me−DalphosAu+ for the formation of a AuIII−Ar intermediate. The better binding ability of alkenes over O nucleophiles ensured the success of intermolecular oxyarylation, giving desired products with a broad substrate scope and high efficiency (>50 examples with up to 95 %
报道了金催化的烯烃分子间氧化芳基化。这项工作采用芳基碘化物与 Me−DalphosAu +的氧化加成形成 Au III -Ar 中间体。烯烃比 O 亲核试剂具有更好的结合能力,确保了分子间氧芳基化的成功,从而得到具有广泛底物范围和高效率的所需产物(> 50 个示例,产率高达 95%)。将甲氧基一锅法转化为其他亲核试剂,可以在温和条件下通过构建 CN-N、C-S 和 C-C 键实现烯烃双官能化。