Sodium Hydroxide → (2-(1,1-Dimethylethyl)-3'-(ethyloxy)-1,1'-biphenyl-4-yl)methanol

HRID 1662350Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1662350
[CH3:1][C:2]([C:5]1[CH:10]=[C:9]([C:11](OC)=[O:12])[CH:8]=[CH:7][C:6]=1[C:15]1[CH:20]=[CH:19][CH:18]=[C:17]([O:21][CH2:22][CH3:23])[CH:16]=1)([CH3:4])[CH3:3].[H-].[H-].[H-].[H-].[Li+].[Al+3].[OH-].[Na+]>C1COCC1>[CH3:4][C:2]([C:5]1[CH:10]=[C:9]([CH2:11][OH:12])[CH:8]=[CH:7][C:6]=1[C:15]1[CH:20]=[CH:19][CH:18]=[C:17]([O:21][CH2:22][CH3:23])[CH:16]=1)([CH3:1])[CH3:3]

Komponenten

5

Edukt 3

HCID 14798Sodium HydroxideHCID 21226445Aluminium lithium hydrideHCID 57706553Methyl 2-(1,1-dimethylethyl)-3'-(ethyloxy)-1,1'-biphenyl-4-carboxylate

Produkt 1

HCID 57705661(2-(1,1-Dimethylethyl)-3'-(ethyloxy)-1,1'-biphenyl-4-yl)methanolAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a cooled solution of 41.1 (0.87 g, 2.79 mmol) in dry THF (10.0 mL) at 0° C., was added LAH (1.0 M solution in THF (5.5 mL, 5.5 mmol)). Upon complete addition, the reaction was allowed to warm to room temperature and monitored by TLC and LCMS. Upon completion, 1N NaOH (5 mL) was carefully added to quench the reaction. The resulting solution was extracted with EtOAc (3×10 mL). The combined organic layers were dried over MgSO4, filtered, and concentrated in vacuo. The residue was then purified by flash chromatography (SiO2 gel 60, eluted with 0%-40% EtOAc in hexanes). Fractions containing the desired product were combined and concentrated to provide 41.2 as a colorless oil (0.72, 91%). 1H NMR (500 MHz, CDCl3) δ ppm 7.53 (1H, d, J=1.5 Hz), 7.26 (1H, m), 7.19 (1H, dd, J=7.7, 1.8 Hz), 7.04 (1H, d, J=7.6 Hz), 6.89 (3H, m), 4.74 (2H, d, J=3.2 Hz), 4.08 (2H, m), 1.71 (1H, s), 1.42 (3H, t, J=7.0 Hz), 1.23 (9H, s).

Aufarbeitung

  1. additionUpon complete addition
  2. customto quench
  3. customthe reaction
  4. extractionThe resulting solution was extracted with EtOAc (3×10 mL)
  5. dry with materialThe combined organic layers were dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was then purified by flash chromatography (SiO2 gel 60, eluted with 0%-40% EtOAc in hexanes)
  9. additionFractions containing the desired product
  10. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-03b6355edbe04b338c1f48d79fa2b2d8
Quelldatensatz
uspto-grants-2011_10
Patentnummer
US08030354B2

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