Rhodium-Catalyzed Cross-Coupling of Vinylarenes with Arylaluminum Reagents in the Presence of Ketones
作者:Shota Tanaka、Atsunori Mori
DOI:10.1002/ejoc.201301757
日期:2014.2
in the presence of the chloro(1,5-cyclooctadiene)rhodium(I) dimer, [RhCl(cod)]2, and diisopropyl ketone (2,4-dimethyl-3-pentanone) as an additive occurred to give (E)-stilbene in quantitative yield. The use of other arylaluminum reagents afforded β-arylated products in good to excellent yields. This reaction was found to be promoted by ketones as additives, which are reduced to the corresponding alcohols
实现了芳基铝试剂与乙烯基芳烃的铑催化加成/消除以获得二苯乙烯衍生物。在氯(1,5-环辛二烯)铑(I)二聚体、[RhCl(cod)]2 和二异丙基酮(2,4-二甲基-3-戊酮)存在下二乙基(苯基)铝与苯乙烯的反应) 作为添加剂发生以定量收率产生 (E)-二苯乙烯。使用其他芳基铝试剂以良好至极好的收率提供 β-芳基化产物。发现该反应被作为添加剂的酮促进,酮被还原为相应的醇,如通过 1 H NMR 光谱分析粗反应混合物所证实的。