Redox‐Neutral Selenium‐Catalysed Isomerisation of
<i>para</i>
‐Hydroxamic Acids into
<i>para</i>
‐Aminophenols
作者:Hsiang‐Yu Chuang、Manuel Schupp、Ricardo Meyrelles、Boris Maryasin、Nuno Maulide
DOI:10.1002/anie.202100801
日期:2021.6.14
AbstractA selenium‐catalysed para‐hydroxylation of N‐aryl‐hydroxamic acids is reported. Mechanistically, the reaction comprises an N−O bond cleavage and consecutive selenium‐induced [2,3]‐rearrangement to deliver para‐hydroxyaniline derivatives. The mechanism is studied through both 18O‐crossover experiments as well as quantum chemical calculations. This redox‐neutral transformation provides an unconventional synthetic approach to para‐aminophenols.