Sodium Tungstate Dihydrate (Na2WO4·2H2O): A Mild Oxidizing and Efficient Reagent in Organic Synthesis

Abstract

The reagent sodium tungstate dihydrate has some special features which are very important in synthesis. For instance, it is a mild and efficient reagent used in oxidation. Based on reports from recent literature we are proposing this spotlight.

Light-modulated colour transformation in highly intertwined vertically growing silver tungstate tubes

“…49 Sodium tungstate is employed as a catalyst in organic chemistry for the epoxidation of alkenes and the oxidation of alcohols to aldehydes or ketones indicating its greater tendency to act as an oxidizing agent. 50 In the presence of light, sodium silicate functions as a mild reducing agent. As a result, no tubes are formed in the case of silver silicate that was kept under light due to the quick reduction of silver ions to metallic silver under light.…”

A Combined Experimental/Computational Study of Dicationic Ionic Liquids with Bromide and Tungstate Anions

“…Other authors have also reported encouraging results concerning the use of tungstate-based ILs for the catalysis reaction of CO 2 with substrates like diamines, propargylic amines, aminophenols, aminothiobenzenes, and cyanoanilines for the preparation of corresponding cyclocarbonated compounds [53][54][55][56][57] or for the conversion of cyclic carbonates into linear ones [58]. In addition to this, tungstate salts have shown interesting catalytic performances in the catalysis of oxidative reactions like the preparations of carboxylic acids and aldehydes as well as sulfones and epoxides [59,60]. Concerning epoxidations, apart from classic tungstate salts, the use of tungstate ILs has also been investigated, producing positive outcomes [53,56].…”