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- W2115823432 abstract "Abstract The reagent (UCl 3 LiAlH 4 ) was shown [1] to reduce both aromatic and non-aromatic alkenes, among them terpenes. Among the very surprising results, there is evidence that the closeness of the uranium catalytic cycle depends on the alkene. Some alkenes are fully hydrogenated into the corresponding alkane during the reaction without hydrolysis, for example ethene, propene. Others are found to be partly deuteriated after hydrolysis with deuterium oxide, for example diphenyl-1,1-ethene. In both these cases, the catalytic uranium center is regenerated and less than 10% of uranium per equivalent of alkene is needed. In the other cases, the reduction proceeds, but an intermediate uranium complex (which has not yet been isolated) accumulates and stops the reaction. Thus the full alkene reduction consumes one equivalent of uranium. It is a contribution to uranium organometallic chemistry as well as to recently developed hydride [3] chemistry. The species ‘UCl 2 H’ formulated by Evans [2] seems to be a possible intermediate in our mechanism. Temptation to assign a fundamental role to uranium is high but care must be taken not to forget the rich properties of aluminium." @default.
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- W2115823432 date "1984-02-01" @default.
- W2115823432 modified "2023-09-27" @default.
- W2115823432 title "Catalytic effect of uranium compounds on alkene hydrogenation" @default.
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- W2115823432 doi "https://doi.org/10.1016/s0020-1693(00)94573-0" @default.
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