3-Hydroxybenzaldehyde → Ethyl 2-(3-formylphenoxy)-2-methylpropanoate

HRID 338795Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 338795
C(O[Na])C.[OH:5][C:6]1[CH:7]=[C:8]([CH:11]=[CH:12][CH:13]=1)[CH:9]=[O:10].Br[C:15]([CH3:22])([CH3:21])[C:16]([O:18][CH2:19][CH3:20])=[O:17]>C(O)C>[CH:9]([C:8]1[CH:7]=[C:6]([CH:13]=[CH:12][CH:11]=1)[O:5][C:15]([CH3:22])([CH3:21])[C:16]([O:18][CH2:19][CH3:20])=[O:17])=[O:10]

Komponenten

5

Edukt 3

HCID 1013-HydroxybenzaldehydeHCID 11745Propanoic acid, 2-bromo-2-methyl-, ethyl esterHCID 178474001HCID 178474001, Verbindung

Produkt 1

HCID 18766496Ethyl 2-(3-formylphenoxy)-2-methylpropanoateAusbeute 59 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

In an ethanol solvent, 1 N ethoxy sodium (NaOEt) (1.1 eq.) was added dropwise to 3-hydroxybenzaldehyde (1.0 eq.) and ethyl α-bromoisobutyrate (1.1 eq.), and the reaction mixture was refluxed. After the ethanol was evaporated, the residual was distributed between ethyl acetate and water, and an organic layer was dried by using MgSO4, filtered, and evaporated. The residual was purified by silica gel column chromatography using hexane and ethyl acetate (8:1) to obtain Compound 97b.

Aufarbeitung

  1. temperaturethe reaction mixture was refluxed
  2. customAfter the ethanol was evaporated
  3. customan organic layer was dried
  4. filtrationfiltered
  5. customevaporated
  6. customThe residual was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-260700aeb1964f25b3cb00c457eeec55
Quelldatensatz
uspto-grants-2014_11
Patentnummer
US08889881B2

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