2015
DOI: 10.1039/c5gc00020c
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Hydroformylation of piperylene and efficient catalyst recycling in propylene carbonate

Abstract: In contrast to monoolefins, diene hydroformylation is still a demanding task. Some dienes like butadiene and isoprene have been investigated more intensively, however, 1,3-pentadiene ( piperylene) has been rarely investigated. Here, we present a systematic investigation of the hydroformylation of piperylene, using Rh(CO) 2 acac/Xantphos as an active catalyst which can be easily recycled in the green solvent propylene carbonate. Under the chosen conditions aldehyde yields of up to 82% have been obtained, while … Show more

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Cited by 32 publications
(11 citation statements)
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“…This corresponds to a turnover frequency (TOF) of over 739 mol mol −1 h −1 , which is the highest rate obtained to date for the hydroformylation of a 1,3‐diene. Similar hydroformylation reactions of conjugated linear dienes reached TOFs of 90 for myrcene, 600 for isoprene, 39 for 1,3‐piperylene, and 500 for 1,3‐butadiene (all TOFs were calculated as moles of carbonylation product per mole of Rh and hour at full conversion, given in mol mol −1 h −1 ). Reducing the catalyst concentration led to even higher TOFs but slowed the hydrogenation down significantly.…”
Section: Methodsmentioning
confidence: 94%
“…This corresponds to a turnover frequency (TOF) of over 739 mol mol −1 h −1 , which is the highest rate obtained to date for the hydroformylation of a 1,3‐diene. Similar hydroformylation reactions of conjugated linear dienes reached TOFs of 90 for myrcene, 600 for isoprene, 39 for 1,3‐piperylene, and 500 for 1,3‐butadiene (all TOFs were calculated as moles of carbonylation product per mole of Rh and hour at full conversion, given in mol mol −1 h −1 ). Reducing the catalyst concentration led to even higher TOFs but slowed the hydrogenation down significantly.…”
Section: Methodsmentioning
confidence: 94%
“…Our working group achieved very promising yields of the unsaturated aldehyde by hydroformylation of piperylene in which the double bond is conjugated to the aldehyde moiety 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 ( Figure 33). [79] Further hydrogenation is prevented at this position. The use of a rhodium/Xantphos catalytic system in the green solvent propylene carbonate (PC) allows for both the recovery of the product fraction by distillation and the reuse of the catalyst-containing PC-phase for recycling at once.…”
Section: Carbonylationmentioning
confidence: 99%
“…Our working group achieved very promising yields of the unsaturated aldehyde by hydroformylation of piperylene in which the double bond is conjugated to the aldehyde moiety (Figure ) . Further hydrogenation is prevented at this position.…”
Section: C5 Moleculesmentioning
confidence: 99%
“…The hydroformylation of 1,3-butadiene, isoprene and piperylene is useful for the synthesis of commodity products. [14][15][16][17][18] Also, 1,3-dienes moieties often occur in natural products, and their hydroformylation leads to aldehydes of interest for the fragrance industry. [19][20][21] However, hydroformylation of this kind of substrates is particularly difficult to achieve.…”
Section: Insert Schemementioning
confidence: 99%