Highly facile homogeneous epoxidation of olefins using oxo-diperoxo tungstate (VI) complex as catalyst, bicarbonate as co-catalyst and hydrogen peroxide as a …

…, S Dinda, N Gharah, R Bhattacharyya

Index: Maiti, Swarup K.; Dinda, Subhajit; Gharah, Narottam; Bhattacharyya, Ramgopal New Journal of Chemistry, 2006 , vol. 30, # 3 p. 479 - 489

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Citation Number: 30

Abstract

Addition of a dilute acetic acid solution of 8-quinolinol to an H2O2 solution of freshly precipitated H2WO4· 2H2O furnishes a yellow adduct [WO (O2) 2· 2QOH] 1 which, on crystallization from a suitable solvent, affords orange-yellow complex [WO (O2)(QO) 2] 2. When 2 reacts stoichiometrically with olefinic compounds in a 1∶ 1 molar ratio, the respective olefins are epoxidized and 2 is converted to the orange-red [WO2 (QO) 2] 3. ...