Enantioselective Intermolecular Pd-Catalyzed Hydroalkylation of Acyclic 1,3-Dienes with Activated Pronucleophiles
作者:Nathan J. Adamson、Katherine C. E. Wilbur、Steven J. Malcolmson
DOI:10.1021/jacs.7b13300
日期:2018.2.28
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。