atroposelective synthesis of two classes of biaryls. The coupling of 3-substituted indoles and N-sulfonyltriazoles afforded indoles with a C(2)–C chiral axis, while the arylation of 1-naphthylthioether with ortho-quinone diazide afforded chiral binaphthyls. These coupling systems proceeded under mild conditions via C–H activation and carbene insertion despite the steric hindrance of both the arenes and the carbene
使用重氮化合物和三唑作为芳基化试剂,用于选择性合成两类联芳基,已经实现了
铑 (III) 催化的 C-H 活化的空间位阻(杂)
芳烃芳基化。3-取代的
吲哚和N-磺酰基三唑的偶联提供了具有 C(2)-C 手性轴的
吲哚,而 1-
萘基
硫醚与邻醌二
叠氮化物的芳基化提供了手性联
萘。尽管
芳烃和卡宾前体都存在空间位阻,但这些偶联系统通过 C-H 活化和卡宾插入在温和条件下进行。