2-Hydroxymethyl-3-(5-carboethoxypentyloxy)-4-pyrone → 2-Formyl-3-(5-carboethoxypentyloxy)-4-pyrone

HRID 2163262

Reaktionsgleichung

Reaktionsgleichung von HRID 2163262
[OH:1][CH2:2][C:3]1[O:4][CH:5]=[CH:6][C:7](=[O:20])[C:8]=1[O:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16]>CC(C)=O.[O-2].[O-2].[Mn+4]>[CH:2]([C:3]1[O:4][CH:5]=[CH:6][C:7](=[O:20])[C:8]=1[O:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])=[O:1]

Komponenten

4

Edukt 1

HCID 233448552-Hydroxymethyl-3-(5-carboethoxypentyloxy)-4-pyrone

Produkt 1

HCID 233448502-Formyl-3-(5-carboethoxypentyloxy)-4-pyrone

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418406HCID 178418406, VerbindungKatalysatorHCID 180AcetoneLösungsmittel

Versuchsvorschrift

To a solution of 6.35 g (0.022 mole) of 2-hydroxymethyl-3-(5-carboethoxypentyloxy)-4-pyrone in 250 ml of acetone was added 12 g of activated manganese dioxide. The resulting suspension was stirred for 3 hr, at which time the mixture was filtered and the filtrate evaporated to an oil. The oil was triturated with hexane/ether to give the crystalline aldehyde, 2-formyl-3-(5-carboethoxypentyloxy)-4- pyrone, weighing 4.1 g (65%), m.p. 32-34.5°.

Aufarbeitung

  1. filtrationwas filtered
  2. customthe filtrate evaporated to an oil
  3. customThe oil was triturated with hexane/ether

Quellen und Nachweise

ORD-Eintrag
ord-0432a924a0b249439b7a8bca4f8c889b
Quelldatensatz
uspto-grants-1979_01
Patentnummer
US04132847

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