A mild, sustainable and practical method for the direct synthesis of nitrones from the corresponding secondary amines by the use of methyltrioxorhenium (MTO) as catalyst and urea-hydrogen peroxide (UHP) as stoichiometric oxidant is reported.
Synthesis of Nitrones by Methyltrioxorhenium Catalyzed Direct Oxidation of Secondary Amines / A. GOTI; L. NANNELLI. - In: TETRAHEDRON LETTERS. - ISSN 0040-4039. - STAMPA. - 37:(1996), pp. 6025-6028.