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- W2168646290 abstract "A variety of amphiphilic ligands has been synthesised comprising Ph2ArP (Ar = 3-hydroxyphenyl, 4-carboxyphenyl), PhnAr3−nP (Ar = 4-PhCH2X, X = NEt2, NMePh, NPh2; n = 1–2) and PhnAr3 − nP (Ar = 3/4-pyridyl; n = 1–2). In the hydroformylation of oct-1-ene (80°C, 20 bar syngas, toluene) the ligands were shown to be comparable with triphenylphosphine. Turnover frequencies of 2.2 × 103 (mol aldehyde · mol Rh−1 · h−1) were found for most ligands with an oct-1-ene concentration of 0.84 M. The pyridylphosphines were up to two times faster. The selectivity of the hydroformylation is not affected by the modifications and in all cases aldehydes were formed with a n/b ratio of 2.8. Ph2P(4-C6H4COOH) showed low catalytic activity under standard conditions. Preliminary experiments have shown that the new ligands in their protonated, water-soluble form do not produce active hydroformylation catalysts." @default.
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- W2168646290 date "1995-05-01" @default.
- W2168646290 modified "2023-10-14" @default.
- W2168646290 title "Rhodium catalysed hydroformylation of higher alkenes using amphiphilic ligands" @default.
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- W2168646290 doi "https://doi.org/10.1016/1381-1169(95)00014-3" @default.
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