3-Methoxybenzaldehyde → 1-Hydroxy-7-methoxy-1,3-dihydrobenzo[c]furan

HRID 611699Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 611699
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]2[C:12]=1[C:10](=[O:11])[O:9][CH2:8]2.[CH3:13][O:14][C:15]1[CH:16]=[C:17]([CH:20]=[CH:21][CH:22]=1)[CH:18]=[O:19].C1(P(=CC(OC)=O)(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C(Cl)(Cl)Cl>[OH:11][CH:10]1[C:12]2[C:3]([O:2][CH3:1])=[CH:4][CH:5]=[CH:6][C:7]=2[CH2:8][O:9]1.[OH:19][CH2:18][C:17]1[CH:20]=[CH:21][CH:22]=[C:15]([O:14][CH3:13])[C:16]=1/[CH:3]=[CH:12]/[C:10]([O:9][CH3:8])=[O:11]

Komponenten

6

Edukt 3

HCID 115693-MethoxybenzaldehydeHCID 17453Acetic acid, 2-(triphenylphosphoranylidene)-, methyl esterHCID 109865837-methoxy-3H-isobenzofuran-1-one

Produkt 2

HCID 136136891-Hydroxy-7-methoxy-1,3-dihydrobenzo[c]furanHCID 19598060Methyl 2E-3-(2-hydroxymethyl-6-methoxyphenyl)acrylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6212ChloroformLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

1-Hydroxy-7-methoxy-1,3-dihydrobenzo[c]furan (1.08 g), which was prepared with using 7-methoxyphthalide which was synthesized with using 3-methoxybenzaldehyde by the method described in Journal of Organic Chemistry, 1980, 45, 1835-1838, was dissolved in chloroform (20 ml). Methyl (triphenylphosphoranylidene)acetate (2.68 g) was added to the solution. The mixture was stirred for 40 min. at 50° C. A temperature of the reaction mixture was down to room temperature. The reaction solution was purified by column chromatography on silica gel (n-hexane:ethyl acetate=2:1) to give the title compound (1.25 g) having the following physical data.

Aufarbeitung

  1. customwas down to room temperature
  2. customThe reaction solution was purified by column chromatography on silica gel (n-hexane:ethyl acetate=2:1)

Quellen und Nachweise

ORD-Eintrag
ord-9fd3965edade4969aa03492764cf90ed
Quelldatensatz
uspto-grants-1999_12
Patentnummer
US06001877

Notizen zur Reaktion

Wird geladen…