C–H functionalizations of complex molecules such as natural products, pharmaceuticals, and π-conjugated systems are at the heart of constructing and modifying organic molecules, whereby the selectivity and predictability are of the utmost importance. Herein, we report the highly C3-selective C–H borylation of strychnine along with olefin isomerization, catalyzed by an iridium complex with a diphosphine ligand. This method enabled us to rapidly produce 15 strychnine derivatives by using the corresponding C3-borylated and isomerized analog as the common synthetic intermediate. The present catalyst system was also generally effective for the C–H functionalization of unsymmetric 1,2-disubstituted benzene derivatives, including fused π-systems (xanthenes, fluorenes, naphthalenes, and anthracenes) and pharmaceuticals (Nifedipine), in which the C–H positions furthest away from the bulky groups were borylated with high selectivity.

复杂分子（例如天然产物，药物和π共轭体系）的C–H功能化是构建和修饰有机分子的核心，因此，选择性和可预测性至关重要。在本文中，我们报道了由铱与二膦配体的配合物催化的士的宁的高度C3选择性C–H硼氢化以及烯烃异构化。这种方法使我们能够通过使用相应的C3硼化和异构化的类似物作为常见的合成中间体，快速生产15种士的宁衍生物。目前的催化剂体系通常对不对称1,2-二取代苯衍生物的C–H官能化也有效，包括稠合的π-体系（黄嘌呤，芴，萘和蒽）和药物（硝苯地平），