Regiodivergent Aromatic Electrophilic Substitution Using Nitrosoarenes in Hexafluoroisopropanol: A Gateway for Diarylamines and
<i>p</i>
‐Iminoquinones Synthesis
作者:Suman Pradhan、Sourav Roy、Soumen Ghosh、Indranil Chatterjee
DOI:10.1002/adsc.201900788
日期:2019.9.17
A metal‐free aromatic electrophilic substitution reaction using nitrosoarenes as the electrophile in 1,1,1,3,3,3‐hexafluoroisopropanol (HFIP) is reported. HFIP activates nitrosoarene towards the electrophilic C−H amination followed by a concomitant N−O bond cleavage to deliver diarylamines without requiring any extra reagent or further treatment. The dual electrophilic nature of nitrosoarene permits
报道了在1,1,1,1,3,3,3-六氟异丙醇(HFIP)中使用亚硝基芳烃作为亲电试剂的无金属芳族亲电取代反应。HFIP可以将亚硝基芳烃活化为亲电子的C H氨基化反应,随后伴随N-O键断裂而生成二芳基胺,而无需任何额外的试剂或进一步处理。亚硝基芳烃的双重亲电子性质允许在亚硝基化学中连续两个[2,3]σ重排的独特机理基础上,将选择性转换为CH氧化,从而提供脱芳构的对亚氨基醌。