New Molybdenum(VI) Catalysts for the Epoxidation of Cyclohexene: Synthesis, Reactivity and Crystal Structures
Document Type
Article
Publication Date
8-5-2004
Department
Department of Chemistry
Abstract
Compounds 1-6 of the type MoO2X2L2 (X=F, Cl, Br; L=OPMePh2, OPPh3) have been prepared in order to investigate the variation in catalytic activity with changes in electronic and steric properties. All six complexes catalyze the epoxidation of cyclohexene with tert-butylhydroperoxide, and the species with X=Cl and L=OPMePh2 (2) displays the best activity with 83% conversion and 90% selectivity in one hour at ambient atmosphere. These inexpensive and easily prepared dioxo catalysts are stable to air and water. Reactions of the dioxo compounds with H2O2 and t-BuOOH have also been carried out. The structures of MoO2F2(OPMePh2)2 (1) and the product of its reaction with H2O2, MoO(O2)2(OPMePh2)2 (7) have been solved by single crystal X-ray diffraction.
Compounds the type MoO2X2L2 (X=F, Cl, Br; L=OPMePh2, OPPh3) catalyze the epoxidation of cyclohexene with tert-butylhydroperoxide. These inexpensive and easily prepared dioxo catalysts are stable to air and water, and therefore potentially more useful in practical terms than current catalysts.
Publication Title
Inorganica Chimica Acta
Recommended Citation
Wang, G.,
Chen, G.,
Luck, R.,
Wang, Z.,
Mu, Z.,
Evans, D.,
&
Duan, X.
(2004).
New Molybdenum(VI) Catalysts for the Epoxidation of Cyclohexene: Synthesis, Reactivity and Crystal Structures.
Inorganica Chimica Acta,
357(11), 3223-3229.
http://doi.org/10.1016/j.ica.2004.03.030
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6495
Publisher's Statement
© 2004 Elsevier B.V. All rights reserved.