- Anisole: A further step to sustainable hydroformylation
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Hydroformylation, also known as the "oxo" process, is a major industrial process that employs rhodium or cobalt catalysts in solution; therefore the solvent of this process is a critical issue for its sustainability. Although several innovative solutions have been proposed recently, traditional fossil-derived solvents dominate the scenario for this reaction. In this paper, we studied a series of solvents considered more sustainable in recent ranks in the hydroformylation of a series of olefins. Anisole, a solvent with an impressive sustainability rank and very scarcely exploited in hydroformylation, proved to be an excellent alternative for this reaction.
- Delolo, Fábio G.,Dos Santos, Eduardo N.,Gusevskaya, Elena V.
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supporting information
p. 1091 - 1098
(2019/03/12)
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- Low pressure hydroformylation in the presence of alcohol promoters
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Active carbon supported cobalt catalyst was studied for the hydroformylation of 1-hexene in the presence of alcohol solvents at low pressure. The influence of various solvents on the hydroformylation and the CO conversion vs time on stream were investigated in detail. It was found that the heterogeneous catalyst shows excellent activity only in the alcohol solvents.
- Li, Baitao,Li, Xiaohong,Asami, Kenji,Fujimoto, Kaoru
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p. 836 - 837
(2007/10/03)
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- Improved regioselectivity in the hydroformylation reaction catalysed by zeolite-encapsulated rhodium(I) species
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Although zeolite-encapsulated [Rh(CO)x(PR3)y] (PR3 = PEt3, PEt2Ph, PPrn3 or PPh3) give similar chemoselectivities in the hydrocarbonylation of hex-1-ene relative to their homogeneous analogues, the linear : branched ratio can be increased by as much as 10 times.
- Andersen, Jo-Ann M.,Currie, Alan W. S.
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p. 1543 - 1544
(2007/10/03)
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- Reaction of Ozonides with Methanol in the Presence of Chlorosulphonic Acid: Selective Cleavage of the C-O Bond of the Peroxide Bridge
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The reaction of 1,2,4-trioxolans (ozonides) (1) with methanol in the presence of chlorosulphonic acid gives good yields of products formed via the corresponding α-methoxy hydroperoxides.The order of reactivity of the ozonides, as estimated by periodic measurement of the n.m.r. spectra of a mixture of the ozonide and chlorosulphonic acid in CD3OD, is as follows: (1a), (1b) > (1c), (1d), (1e), (1f), (1g) > (1h).
- Miura, Masahiro,Nojima, Masatomo,Kusabayashi, Shigekazu
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p. 2909 - 2913
(2007/10/02)
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