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- W2058842541 abstract "The cis-stilbene oxide/trans-stilbene oxide isomer assignment given formerly in Inorg. Chim. Acta, 193 (1992) 217 should be reversed. This assignment was based on the 1H NMR spectra of the stilbene oxides given in The Varian High Resolution NMR Spectral Catalog, Vol. 2, which is in error. The large amount of trans-oxide versus cis-oxide (5.5:1) from the cis-stilbene epoxidation by [RuIII(hedta)]/t-BuOOH, and 100% trans-oxide from trans- stilbene, is reinterpreted as indicative of a radicaloid intermediate in ⩾85% of the reaction channels. Comparisons are made with 15 ruthenium oxo catalysts which epoxidize stilbenes. Two categories are observed which are (A) stereoretentive RuIVO catalysts or sterically hindered RuVIO porphyrin oxidants, and (B) those which give isomer mixtures for Z-olefins and which are less hindered RuVO and RuIVO catalysts. The mechanistics aspects of these epoxidations are discussed." @default.
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- W2058842541 date "1993-07-01" @default.
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- W2058842541 title "Reconsidered mechanism in RuIII(hedta)-catalyzed epoxidation of stilbenes" @default.
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- W2058842541 doi "https://doi.org/10.1016/s0020-1693(00)85142-7" @default.
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