Tetrahedron letters

Highly efficient utilization of H 2 O 2 for oxygenation of organic sulfides catalyzed by [γ-SiW 10 O 34 (H 2 O) 2] 4−

TD Phan, MA Kinch, JE Barker, T Ren

Index: Phan, Tuan D.; Kinch, Mark A.; Barker, Julia E.; Ren, Tong Tetrahedron Letters, 2005 , vol. 46, # 3 p. 397 - 400

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Citation Number: 32

Abstract

Remarkable efficiency of hydrogen peroxide utilization is reported for oxygenation of four organic sulfides catalyzed by a divacant lacunary silicotungstate,(Bu4N) 4 [γ-SiW10O34 (H2O) 2](), under mild conditions. The addition of imidazole, phosphate, or carboxylates significantly enhances the rate of organic sulfide oxygenation. Most notably, use of and imidazole, both at 1% molar concentration, resulted in the quantitative conversion of ...