Synthetic Route of 20759-14-2, An article , which mentions 20759-14-2, molecular formula is Cl3H2ORu. The compound – Ruthenium(III) chloride hydrate played an important role in people’s production and life.
Alkene oxidation catalyzed by a ruthenium-substituted heteropolyanion, SiRu(L)W11O39: The mechanism of the periodate mediated oxidative cleavage
A ruthenium-substituted heteropolyanion SiRu(H2O)W11O395- was synthesized and characterized. The hydrophobic quaternary ammonium salt of the heteropolyanion ((C6H13)4N)5SiRu III(H2O)W11O39 was used as a catalyst for the oxidation of alkenes with tert-butyl hydroperoxide, potassium persulfate, iodosobenzene, and sodium periodate as primary oxidants. Reactivity and selectivity were found to be dependent on the oxidant used; several different types of oxidation processes could be identified including allylic oxidation, epoxidation, and oxidative cleavage. Use of sodium periodate as oxidant enabled selective bond cleavage with aldehydes as the exclusive product. Different product selectivity and UV-vis and IR spectra of the ruthenium heteropoly compound in the presence of the various oxidants shows that unique mechanisms are operating in each case. A series of further experiments into the oxidation of styrene derivatives to benzaldehydes by sodium periodate including investigation of the reaction kinetics, substituent effects, and isotope incorporation enabled the formulation of a reaction mechanism. The reaction proceeds by interaction of the styrene with the catalyst forming a metallocyclooxetane which rearranges in the rate-determining step to a cyclic diester through two different transition states depending on the ring substituent. In the final step the cyclic diester decomposes yielding the cleavage products.
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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI