Modular Synthesis of Phenanthridine Derivatives by Oxidative Cyclization of 2-Isocyanobiphenyls with Organoboron Reagents
作者:Mamoru Tobisu、Keika Koh、Takayuki Furukawa、Naoto Chatani
DOI:10.1002/anie.201206115
日期:2012.11.5
Where HAS you been? A manganese‐mediated annulation of 2‐isocyanobiaryls with organoboronic acids is developed for the synthesis of a broad range of phenanthridine derivatives (see scheme). Mechanistic studies indicate that the reaction proceeds by the intramolecular homolytic aromatic substitution (HAS) of an imidoyl radical intermediate.
你去哪了 开发了锰介导的2-异氰基联芳基与有机硼酸的环合反应,用于合成广泛的菲啶衍生物(请参见方案)。机理研究表明,该反应通过亚氨基自由基中间体的分子内均溶芳族取代(HAS)进行。