4-Hydroxybenzaldehyde → 4-(2-Tetrahydro-2H-pyranoxy)benzaldehyde

HRID 479603

Reaktionsgleichung

Reaktionsgleichung von HRID 479603
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1.[O:10]1[CH:15]=[CH:14][CH2:13][CH2:12][CH2:11]1.C1(C)C=CC(S([O-])(=O)=O)=CC=1.[NH+]1C=CC=CC=1>C1COCC1>[O:10]1[CH2:15][CH2:14][CH2:13][CH2:12][CH:11]1[O:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 1264-HydroxybenzaldehydeHCID 80803,4-dihydro-2H-pyranHCID 466102Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1)

Produkt 1

HCID 112527364-(2-Tetrahydro-2H-pyranoxy)benzaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

40.0 g of 4-hydroxybenzaldehyde are dissolved in 400 ml of abs. THF under a protective-gas atmosphere, 55.1 g of dihydropyran and 13.7 g of pyridinium p-toluenesulfonate are added, and the mixture is stirred overnight at room temperature. The solvent is removed in a rotary evaporator, and the residue is subjected to conventional work-up, giving 4-(tetrahydropyran-2-yloxy)benzaldehyde (“BA”) as a colourless oil.

Aufarbeitung

  1. customThe solvent is removed in a rotary evaporator

Quellen und Nachweise

ORD-Eintrag
ord-4c452461370e4d9e8bf9bcf189ef2201
Quelldatensatz
uspto-grants-2003_11
Patentnummer
US06645991B1

Verknüpfte Notizen

Wird geladen…