Based on some very recent results on Fe-catalyzed boron-source-dependent regiodivergent hydroborations of internal alkynes, we report here a boron-source-dependent but also ligand-dependent mechanistic trichotomy in borylative cyclizations. The choice of ligand plus boron source allows the synthesis of three isomeric borylative cyclization products starting from a common substrate and using the same precatalyst ((Ph₃P)₂Fe(CO)(NO)H) and sets the stage for the development of a unifying concept in Fe-catalyzed borylative cyclizations.

中文翻译：

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Fe 催化烯炔硼化环化中试剂和配体依赖性机制三分法


基于铁催化的硼源依赖性内部炔烃区域发散性硼氢化反应的一些最新结果，我们在此报告了硼基化环化中硼源依赖性且配体依赖性的机械三分法。配体加硼源的选择允许从共同底物开始并使用相同的预催化剂 ((Ph ₃ P) ₂ Fe(CO)( NO)H) 并为 Fe 催化硼化环化的统一概念的发展奠定了基础。