Abstract
Vibrational spectroscopy and EXAFS studies of an organotin molybdate with the formula [((Me)2(menthyl)Sn)2MoO4(H2O)3.5] reveal that the compound is polymeric and contains [MoO4]2− tetrahedra coordinated to [R3Sn]+ cationic spacers. The compound can be used as a recyclable solid catalyst for the selective epoxidation of cyclooctene by tert-butylhydroperoxide. In the epoxidation of prochiral olefins such as trans-β-methylstyrene, the corresponding epoxide isomers are obtained with fairly good to excellent selectivity, albeit with low enantiomeric or diastereomeric excesses.
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Acknowledgments
The authors are grateful to the FCT, OE and FEDER for funding (Project POCI/CTM/58507/2004). We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities and we would like to thank Silvia Ramos for assistance in using beamline BM29.
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Abrantes, M., Valente, A.A., Pillinger, M. et al. Characterization of a chiral menthyldimethyltin molybdate and its use as an olefin epoxidation catalyst. Catal Lett 114, 103–109 (2007). https://doi.org/10.1007/s10562-007-9048-2
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DOI: https://doi.org/10.1007/s10562-007-9048-2