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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 41, 2011 - Issue 18
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Original Articles

Transformation of Amines to Oximes Using Heterogeneous Nanocrystalline Titanium(IV) Oxide as a Green Catalyst

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Pages 2655-2662 | Received 19 Apr 2010, Published online: 29 Jun 2011
 

Abstract

The oxidation of amines into corresponding oximes has been described using heterogeneous nanocrystalline titanium(IV) oxide as catalyst and H2O2 as oxidizing agent in quantitative yields. Both aromatics and aliphatic amines undergo oxidation. Besides this, nanocrystalline TiO2 was recovered and used for further reactions. Hence our present protocol is economical and clean and uses green reagent, solvent, and catalyst.

Graphical Abstract

Notes

aReaction conditions: benylamine (1 mmol), hydrogen peroxide (4 mmol), and 10 mol% catalyst; MeOH; temperature 60 °C.

aReaction conditions: benzylamine (1 mmol), hydrogen peroxide (4 mmol), and 10 mol% nanoTiO2 (50 ± 2) nm; solvent; temperature 60 °C.

bIsolated yields.

aReaction conditions: benzylamine (1 mmol), hydrogen peroxide (4 mmol), and 10 mol% nanoTiO2 (50 ± 2) nm; MeOH; temperature 60 °C.

bIsolated yields.

aReaction conditions: benzylamine (1 mmol), hydrogen peroxide (4 mmol), and 10 mol% nanoTiO2 (50 ± 2) nm; MeOH; temperature 60 °C.

bIsolated yields.

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