The First Example of Catalytic N‐Oxidation of Tertiary Amines by Tungstate‐Exchanged Mg—Al Layered Double Hydroxide in Water: A Green Protocol.

A green process, using a recyclable tungstate-exchanged Mg–Al layered double hydroxide (LDH-WO42−) heterogenised catalyst and aqueous H2O2 oxidant in water, leads to N-oxidation of aliphatic tert-amines to amine N-oxides in quantitative yields, at a high rate at room temperature.