Abstract
A generalized synthesis method for decatungstate hybrids from bisulfate-based acidic ionic liquids was reported. N-butylpyridinium decatungstate [bPy]4W10O32 and 1-butyl-3-methylimidazolium decatungstate [bmIm]4W10O32 were synthesized and have been demonstrated to be good thermo-regulated phase transfer catalysts in an organic-solvent-free selective oxidation of alcohols under mild conditions. Advantages of heterogeneous and homogeneous catalysis are combined here, provided good self-separated and ease-of-recycling catalysts.
Graphical Abstract
Decatungstates hybrids were synthesized in high yields directly from bisulfate-based ionic liquids, and used as novel catalysts in selective oxidation of alcohols to aldehydes or ketones. A homogeneous phase can be induced during reaction, and the catalyst could be self separated after reaction.
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Acknowledgments
The authors are grateful for the financial supports from the National Natural Science Foundation of China (No. 21103077), Program for New Century Excellent Talents in University(NCET) (No. NCET-11-1011), Liaoning Excellent Talents in University (Nos. LR201024 and LJQ2011035), Natural Science Foundation of Liaoning Province (Nos. 201102120 and 201202123) and Foundation of the Education Department of Liaoning Province (Nos. 2010243 and L2012128).
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Liu, D., Gui, J., lu, F. et al. New Simple Synthesis Route for Decatungstate Hybrids: Novel Thermo-Regulated Phase Transfer Catalysts for Selective Oxidation of Alcohols. Catal Lett 142, 1330–1335 (2012). https://doi.org/10.1007/s10562-012-0911-4
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DOI: https://doi.org/10.1007/s10562-012-0911-4