We report a highly enantioselective Pd-PHOX-catalyzed intermolecular hydroalkylation of acyclic 1,3-dienes. Meldrum's acid derivatives and other activated C-pronucleophiles, such as β-diketones and malononitriles, react with a variety of aryl- and alkyl-substituted dienes in ≤20 h at room temperature. The coupled products, obtained in up to 96% yield and 97.5:2.5 er, are easily transformed into useful
我们报道了一种高度对映选择性的 Pd-PHOX 催化的无环 1,3-二
烯的分子间加
氢烷基化反应。Meldrum 的酸衍
生物和其他活化的 C-亲核试剂,例如
β-二酮和
丙二腈,可在室温下 ≤20 小时内与各种芳基和烷基取代的二
烯反应。偶联产物的产率高达 96%,比例为 97.5:2.5,很容易转化为下游合成有用的
化学结构单元。