Methanol → methyl L-xylofuranoside

HRID 638824

Reaktionsgleichung

Reaktionsgleichung von HRID 638824
[O:1]=[CH:2][C@H:3]([C@@H:5]([C@H:7]([CH2:9][OH:10])[OH:8])[OH:6])[OH:4].[CH3:11]O>Cl>[O:1]([CH3:11])[CH:2]1[O:8][C@@H:7]([CH2:9][OH:10])[C@@H:5]([OH:6])[C@@H:3]1[OH:4]

Komponenten

4

Edukt 2

HCID 887MethanolHCID 95259L-Xylose

Produkt 1

HCID 12042993methyl L-xylofuranosideAusbeute 95 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 313Hydrochloric AcidLösungsmittel

Versuchsvorschrift

L-Xylose (1, 25g, 167 mmol) was stirred for 5 hours in 0.5% hydrogen chloride in methanol (675 mL) at room temperature and then neutralized with Amberlite IRA-400 OH anion exchange resin. The filtrate and washings were combined and evaporated to dryness and the crude product was purified by silica gel chromatography (CHCl3/MeOH, 92:8) to afford 26.2 g of methyl L-xylofuranoside (2, 95% yield) as an α and β (1:1) mixture. MS 164 (M)+, 165 (M+H)+, 133 (M−OCH3)+.

Aufarbeitung

  1. customevaporated to dryness
  2. customthe crude product was purified by silica gel chromatography (CHCl3/MeOH, 92:8)

Quellen und Nachweise

ORD-Eintrag
ord-2f69299a7127438888072c08ab3b1882
Quelldatensatz
uspto-grants-2010_04
Patentnummer
US07691820B2

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