Ascorbic Acid as an Initiator for the Direct CH Arylation of (Hetero)arenes with Anilines Nitrosated In Situ
作者:Fernando Pinacho Crisóstomo、Tomás Martín、Romen Carrillo
DOI:10.1002/anie.201309761
日期:2014.2.17
direct CH arylation of (hetero)arenes. Starting from an aniline, the corresponding arenediazonium ion is generated in situ and immediately reduced by vitamin C to an aryl radical that undergoes a homolytic aromatic substitution with a (hetero)arene. Notably, neither heating nor irradiation is required. This procedure is mild, operationally simple, and constitutes a greener approach to arylation.
抗坏血酸(维生素C)已被用作(杂)芳烃的无金属直接CH芳基化反应中的自由基引发剂。从苯胺开始,相应的苯二氮杂鎓离子在原位生成,并立即被维生素C还原为芳基,该芳基经历了(杂)芳烃的均相芳族取代。值得注意的是,既不需要加热也不需要辐照。该过程是温和的,操作简单的,并且构成了芳构化的绿色方法。