H 2 -Driven Deoxygenation of Epoxides and Diols to Alkenes Catalyzed by Methyltrioxorhenium
2009; American Chemical Society; Volume: 48; Issue: 21 Linguagem: Inglês
10.1021/ic901792b
ISSN1520-510X
AutoresJeanette E. Ziegler, Michael J. Zdilla, Andrew Evans, Mahdi M. Abu‐Omar,
Tópico(s)Asymmetric Hydrogenation and Catalysis
ResumoCatalytic deoxygenation of epoxides and diols is underdeveloped. This reaction is appealing in the context of making value-added organics from biomass. Methyltrioxorhenium (MTO) catalyzes the conversion of epoxides and vicinal diols to olefins with dihydrogen (H2) as the reductant under reasonably mild conditions (150 °C and 80−300 psi). The only reaction byproduct is water. The reaction is selective for cis cyclic diols, signaling a mechanism of alkene extrusion from a coordinated epoxide via a metallaoxetane intermediate.
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