Temperaturgesteuertes Katalysatorrecycling in der homogenen Übergangsmetallkatalyse: Minimierung des Katalysatorleachings

Brunsch, Yvonne; Behr, Arno

doi:10.1002/ange.201208667

Cited by 28 publications

(12 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Behr et al. reported recently the use of this strategy on a regular long‐chain alkene, namely 1‐dodecene, with an Rh‐biphephos system 26. The catalyst (loaded at [dodecene] 0 /[Rh]=1,000 with 20 equiv.…”

Section: Resultsmentioning

confidence: 99%

“…A preliminary study by 1 H NMR of the partition of substrate 1 / 1 ‐int and hydroformylation product 2 in representative TMS systems, DMF/decane and propylene carbonate (PC)/decane, was performed (Table 10). The separation temperature was set up at 0 °C based on Behr’s studies 26. This study revealed that such TMS systems, although highly effective in the hydroformylation of 1‐dodecene with Rh‐biphephos, cannot be used in the case of 1 / 1 ‐int .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Total Synthesis of a Glycoglycerolipid from Meiothermus taiwanensis through a One‐Pot Glycosylation Reaction and Exploration of its Immunological Properties

Ghosh

Lai

Shih

et al. 2013

Chemistry An Asian Journal

View full text Add to dashboard Cite

The total synthesis of a glycoglycerolipid isolate of Meiothermus taiwanensis and its truncated structural analogues is reported. Our synthesis employed DMF-modulated and low-concentration glycosylation reactions for the construction of α- and β-glycosidic bonds in the absence of participating protecting groups. Further simplification of the synthesis was achieved by employing a low-concentration one-pot glycosylation procedure. Preliminary immunological studies showed that one of the truncated structural analogues suppressed the cytokine production of THP-1 monocytes.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Total Synthesis of a Glycoglycerolipid from Meiothermus taiwanensis through a One‐Pot Glycosylation Reaction and Exploration of its Immunological Properties

Ghosh

Lai

Shih

et al. 2013

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…This has to be considered when designing the hydroamination process, because increasing acetonitrile concentrations in the alkane-rich product phase correspond to increasing catalyst leaching. 36 Morpholine accumulates in all cases in the acetonitrile-rich phase (Figures 3 to 5). PC-SAFT predicts this behavior correctly, as shown for the solvent system acetonitrile/nheptane in Figure 6.…”

Section: Journal Of Chemical and Engineering Datamentioning

confidence: 97%

Phase Equilibria in Systems of Morpholine, Acetonitrile, and n-Alkanes

2015

View full text Add to dashboard Cite

This work presents investigations on the liquid−liquid equilibria (LLE) of ternary systems composed of morpholine, acetonitrile, and an n-alkane at 298.15 K and atmospheric pressure. The investigated nalkanes were n-hexane, n-heptane, and n-octane. The experimental data were compared to predictions using the perturbed chain-statistical associating fluid theory (PC-SAFT). The predictions are based on pure-component parameters fitted to vapor pressures and liquid densities as well as on binary parameters fitted to binary systems' phase equilibria. For that purpose, the vapor−liquid equilibrium of the morpholine/acetonitrile system was measured at 100 mbar and modeled with PC-SAFT. Binary interaction parameters for acetonitrile/n-alkane systems were obtained from a correlation as a function of the n-alkane carbon number. This correlation, together with the other pure-component and binary parameters, was used to make predictions on ternary systems with n-alkanes longer than n-octane, for which data were taken from literature. All ternary LLE predictions were in satisfactory agreement with experimental data.

show abstract

“…A frequently used method is the application of liquid-liquid biphasic (LLB) systems. [31][32][33] For example, Dutta et al have used eco-friendly propylene carbonate as a polar solvent; however, the added dioxane has been regarded to be problematic by the European Chemicals Bureau. 24 In general, water is a highly desirable solvent, as it is cheap, non-toxic and easy to remove.…”

Section: Introductionmentioning

confidence: 99%

Hydroformylation of piperylene and efficient catalyst recycling in propylene carbonate

2015

Self Cite

View full text Add to dashboard Cite

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 catalyst recycling was possible for up to six runs.Scheme 1 Hydroformylation of a terminal olefin.

show abstract

Temperaturgesteuertes Katalysatorrecycling in der homogenen Übergangsmetallkatalyse: Minimierung des Katalysatorleachings

Cited by 28 publications

References 42 publications

Total Synthesis of a Glycoglycerolipid from Meiothermus taiwanensis through a One‐Pot Glycosylation Reaction and Exploration of its Immunological Properties

Total Synthesis of a Glycoglycerolipid from Meiothermus taiwanensis through a One‐Pot Glycosylation Reaction and Exploration of its Immunological Properties

Phase Equilibria in Systems of Morpholine, Acetonitrile, and n-Alkanes

Hydroformylation of piperylene and efficient catalyst recycling in propylene carbonate

Contact Info

Product

Resources

About