Polyoxometalate-based protic alkylimidazolium salts as reaction-induced phase-separation catalysts for olefin epoxidation

Y Qiao, Z Hou, H Li, Y Hu, B Feng, X Wang, L Hua…

Index: Qiao, Yunxiang; Hou, Zhenshan; Li, Huan; Hu, Yu; Feng, Bo; Wang, Xiangrui; Hua, Li; Huang, Qingfa Green Chemistry, 2009 , vol. 11, # 12 p. 1955 - 1960

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Citation Number: 70

Abstract

Two protic alkylimidazolium polyoxometalates, together with two corresponding aprotic N- methyl-alkylimidazolium polyoxometalates were synthesized and characterized by the methods of NMR, IR and TGAetc. Then, these salts were employed as catalysts for the epoxidation of cyclooctene in different media. The novel protic N-dodecylimidazolium peroxotungstate [HDIm] 2 [{WO (O2) 2} 2 (μ–O)] was found to be a room temperature liquid ...