Reaktionsgleichung
[O:1]1[CH2:5][CH:4]=[CH:3][CH2:2]1.C.[OH2:7]>[Re]>[C:5]1(=[O:7])[O:1][CH2:2][CH2:3][CH2:4]1.[O:1]1[CH:2]=[CH:3][CH2:4][CH2:5]1.[O:1]1[CH:5]=[CH:4][CH:3]=[CH:2]1Komponenten
7
Edukt 3
Produkt 3
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
In a manner similar to that described in Example 1, 10 mL/h of 2,5-dihydrofuran and 9 mL/h of water were passed over 73 g of a rhenium-on-activated charcoal catalyst (rhenium content: 6 wt %, calculated as Re; prepared by impregnation of 4 mm activated charcoal extrudates with an aqueous dirhenium heptoxide Re2O7 solution; drying at 120° C.; reduction in a manner similar to that described in Example 1). At a conversion of 99%, γ-butyrolactone was formed with a selectivity of 91% (2,3-dihydrofuran: 0.5%; furan: 1%; tetrahydrofuran: 5%; n-butanol: 1%; remainder: small amounts of various non-analyzed low-boiling fractions).
Aufarbeitung
- customprepared by impregnation of 4 mm
- customdrying at 120° C.
Quellen und Nachweise
- ORD-Eintrag
- ord-a9cb4424c82048b0a6147e17ce5d9647
- Quelldatensatz
- uspto-grants-1997_07
- Patentnummer
- US05646307
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