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Molybdenum oxide/bipyridine hybrid material {[MoO3(bipy)][MoO3(H2O)]}n as catalyst for the oxidation of secondary amines to nitrones |
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| Authors: | Marta Abrantes Isabel S GonçalvesMartyn Pillinger Carolina VurchioFranca M Cordero Alberto Brandi |
| Institution: | a Centro de Química Estrutural, Complexo Interdisciplinar, Instituto Superior Técnico, Universidade Técnica de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal b Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal c Department of Chemistry ‘Ugo Schiff’, University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy |
| Abstract: | The inorganic-organic hybrid material {MoO3(bipy)]MoO3(H2O)]}n (bipy = 2,2′-bipyridine) can be used as a water-tolerant catalyst for the oxidation of secondary amines under mild conditions using either urea hydrogen peroxide (UHP) or tert-butylhydroperoxide (TBHP) as the oxidant. Under optimized reaction conditions (2 mol % catalyst, 3-4 equiv TBHP, CH2Cl2 as the solvent, 40 °C), the corresponding nitrones were obtained with different efficiency depending on the nature of the cyclic or acyclic amine used. |
| Keywords: | Inorganic-organic hybrid materials Oxomolybdenum catalysts Oxidation Secondary amines Nitrones |
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