bioactive compounds. However, the atropisomerism arising from a restricted rotation around an N–N bond is largely overlooked. Here, we describe a method to access the first enantioselective synthesis of N–N biaryl atropisomers via a Cu-bisoxazoline-catalyzed Friedel–Crafts alkylation reaction. A wide range of axially chiral N–N bisazaheterocycle compounds were efficiently prepared in high yields with
含有基序的氮-氮键在
天然产物和
生物活性化合物中无处不在。然而,由围绕 N-N 键的受限旋转引起的阻转异构在很大程度上被忽视了。在这里,我们描述了一种通过 Cu-双
恶唑啉催化的 Friedel-Crafts 烷基化反应对 N-N 联芳基阻转异构体进行首次对映选择性合成的方法。通过去对称化和动力学拆分,以高产率高效制备了多种轴向手性 N-N 双氮杂
杂环化合物,并具有优异的对映选择性。加热实验表明轴向手性双氮杂杂环产物具有高旋转势垒。