Enantio‐ and Regioselective NiH‐Catalyzed Reductive Hydroarylation of Vinylarenes with Aryl Iodides
作者:Yuli He、Chuang Liu、Lei Yu、Shaolin Zhu
DOI:10.1002/anie.202010386
日期:2020.11.23
A highly enantio‐ and regioselectivehydroarylation process of vinylarenes with aryl halides has been developed using a NiH catalyst and a new chiral bis imidazoline ligand. A broad range of structurally diverse, enantioenriched 1,1‐diarylalkanes, a structure found in a number of biologically active molecules, have been obtained with excellent yields and enantioselectivities under extremely mild conditions
asymmetric catalysis using an effective chiralligand. Herein we report the Cu-catalyzed enantioselective alkylarylation of vinylarenesusing alkylsilyl peroxides as alkyl radical sources. This reaction proceeds under practical reaction conditions and affords chiral 1,1-diarylalkane structures that are found in a variety of bioactive molecules. Notably, a highly enantioselective reaction was accomplished
过渡金属催化的自由基中继偶联反应最近已成为实现烯烃双官能化的最有效方法之一。然而,在使用有效手性配体将这种方法应用于不对称催化方面的成功有限。在此,我们报告了使用烷基甲硅烷基过氧化物作为烷基自由基源的 Cu 催化的乙烯基芳烃的对映选择性烷基芳基化。该反应在实际反应条件下进行,并提供在各种生物活性分子中发现的手性 1,1-二芳基烷烃结构。值得注意的是,高度对映选择性反应是通过将手性双(恶唑啉)配体与手性联萘支架结合来实现的。