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- W2012168595 abstract "Abstract The rate of hydrogenation of cyclohexene catalyzed by RhCl(PPh3)3 was studied in the presence of BCl3, B(CH3)3, Eu(fod)3 (fod = 6,6,7,7,8,8-heptafluoro-2,2-dimethyl-3,5-octadione anion), AlCl3, AlBr3 and Al(i-C4H9)3. Only AlBr3 effected a large increase in rate, which is attributed to the formation of the more active catalyst RhBr(PPh3)3 by a simple metathesis. A very significant rate enhancement was found for the hydrogenation of ethylene by RhCI(PPh3)3 when Al(i-C4H9)3 was added to the system. It is postulated that RhH(PPh3)3 formation is responsible for this rate increase. The rate of 1-hexene hydrogenation catalyzed by RuCl2(PPh3)3 is increased by the presence of aluminum alkyls, and the origin of this rate increase is elucidated. In the course of this work the compound RuCl(CH3)(PPh3)3 was isolated and characterized. This compound is closely related to alkyl complexes which have been postulated as intermediates in olefin hydrogenation catalysis by RuClH(PPh3)3." @default.
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- W2012168595 date "1975-04-01" @default.
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- W2012168595 title "The influence of some Lewis acids on homogeneous olefin hydrogenation by metal complexes" @default.
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- W2012168595 doi "https://doi.org/10.1016/s0022-328x(00)91609-7" @default.
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