(+-)-Pantolactone → Keto-pantoyllactone

HRID 1200267

Reaktionsgleichung

Reaktionsgleichung von HRID 1200267
[CH3:1][C:2]1([CH3:9])[CH:7]([OH:8])[C:5](=[O:6])[O:4][CH2:3]1>[O-2].[Fe+3].[O-2].[O-2].[Fe+3].[Mo](=O)(=O)=O>[CH3:1][C:2]1([CH3:9])[C:7](=[O:8])[C:5](=[O:6])[O:4][CH2:3]1

Komponenten

4

Edukt 1

HCID 989(+-)-Pantolactone2×

Produkt 1

HCID 39Keto-pantoyllactone

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 14802Molybdenum trioxideKatalysatorHCID 14833Hematite (Fe2O3)Katalysator

Versuchsvorschrift

A mixture of iron (III) oxide and molybdenum trioxide (G-105 from Girdler) is used as the catalyst in the reactor described in Example 1 and the temperature of the air bath is adjusted to 225° C. 60 l of air and 33 g of pantolactone are subsequently added hourly to the evaporator. 96% of the pantolactone are transformed and ketopantolactone is formed with a selectivity of 83%.

Aufarbeitung

  1. customis adjusted to 225° C

Quellen und Nachweise

ORD-Eintrag
ord-c781faa2b1a44c349a9a32b4dad84e85
Quelldatensatz
uspto-grants-1990_02
Patentnummer
US04904805

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