Sodium Hydroxide → (E)-3-(6-methoxy-3-pentylbenzofuran-2-yl)-2-propenoic acid

HRID 1651271Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1651271
C[O:2][C:3](=[O:22])/[CH:4]=[CH:5]/[C:6]1[O:7][C:8]2[CH:19]=[C:18]([O:20][CH3:21])[CH:17]=[CH:16][C:9]=2[C:10]=1[CH2:11][CH2:12][CH2:13][CH2:14][CH3:15].[OH-].[Na+]>CO>[CH3:21][O:20][C:18]1[CH:17]=[CH:16][C:9]2[C:10]([CH2:11][CH2:12][CH2:13][CH2:14][CH3:15])=[C:6](/[CH:5]=[CH:4]/[C:3]([OH:22])=[O:2])[O:7][C:8]=2[CH:19]=1

Komponenten

4

Versuchsvorschrift

As in Example 112, (E)-3-(6-methoxy-3-pentylbenzofuran-2-yl)-2-propenoic acid methyl ester (4.25 g) in methanol (25 mL) was treated with 2N sodium hydroxide solution (15 mL) at reflux for 1.25 hours. The crude reaction product was crystallized from ethyl acetate to provide 3.6 g of (E)-3-(6-methoxy-3-pentylbenzofuran-2-yl)-2-propenoic acid, mp 146°-147° C. Anal. Calcd for C17H20O4 : C, 70.81; H, 6.99 Found: C, 70.51; H, 6.89

Aufarbeitung

  1. temperatureat reflux for 1.25 hours
  2. customThe crude reaction product
  3. customwas crystallized from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-3550023565dc417f8ed008453e00080e
Quelldatensatz
uspto-grants-1990_05
Patentnummer
US04927838

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