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• W2029459898 abstract "In the presence of the cobaloxime(II) catalyst [Co(Hdmg)2(Ph3P)2], at room temperature and 1 atm O2 or air, the dihydroxystilbene derivative referred to in the title (H2StQ) undergoes oxidative dehydrogenation to the corresponding stilbenequinone (StQ), and parallel oxidative cleavage at the CC double bond to afford 2,6-di-tert-butyl-4-hydroxybenzaldehyde (Ald). The two products are formed via a common anion radical intermediate stable enough for detection by ESR spectroscopy. A detailed kinetic analysis has been carried out by volumetric, spectrophotometric and HPLC techniques. The observed kinetic behavior is consistent with the formation of a superoxocobaloxime(III) intermediate, which generates the free radical intermediate from H2StQ. In the steady state, the catalyst is present in a hydroxo-cobaloxime(III) precursor state, from which it is released via reduction to cobaloxime(II) by the anion radical." @default.
• W2029459898 created "2016-06-24" @default.
• W2029459898 creator A5024254961 @default.
• W2029459898 creator A5047097144 @default.
• W2029459898 date "1997-03-01" @default.
• W2029459898 modified "2023-10-18" @default.
• W2029459898 title "Kinetics and mechanism of the cobaloxime(II) catalyzed oxidative dehydrogenation and double bond cleavage of 3,3′,5,5′-tetra-tert-butyl-4,4′-dihydroxystilbene by O2" @default.
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• W2029459898 doi "https://doi.org/10.1016/s1381-1169(96)00269-5" @default.
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