Sodium Hydroxide → 2-(4-Fluorophenylmethoxymethyl)thiophene

HRID 52185

Reaktionsgleichung

Reaktionsgleichung von HRID 52185
[F:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6]Br)=[CH:4][CH:3]=1.[S:10]1[CH:14]=[CH:13][CH:12]=[C:11]1[CH2:15][OH:16].[OH-].[Na+]>CS(C)=O.[Cl-].C([N+](C)(C)C)C1C=CC=CC=1.[Cl-].[Na+].O>[F:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6][O:16][CH2:15][C:11]2[S:10][CH:14]=[CH:13][CH:12]=2)=[CH:4][CH:3]=1

Komponenten

7

Edukt 3

HCID 14798Sodium HydroxideHCID 680214-Fluorobenzyl bromideHCID 694672-Thiophenemethanol

Produkt 1

HCID 199633152-(4-Fluorophenylmethoxymethyl)thiopheneAusbeute 86 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 5963Benzyltrimethylammonium chlorideKatalysatorHCID 679Dimethyl SulfoxideLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel

Versuchsvorschrift

To a solution in DMSO (30 mL) of 4-fluorobenzyl bromide (3.27 mL, 26.3 mmol), 2-thiophenemethanol (3.00 mL, 31.7 mmol), and benzyltrimethylammonium chloride (244 mg, 1.31 mmol) was added NaOH (6.31 g, 159 mmol) and the reaction mixture was stirred for 17 hours at ambient temperature. The reaction mixture was poured into brine and extracted with ether. The organic phase was washed with 1N aqueous H3PO4 (3×), H2O (3×), saturated aqueous NaHCO3 (2×), and brine, dried over MgSO4, filtered, and concentrated in vacuo. Chromatography on silica gel (20% ethyl acetate/hexane) gave 2-(4-fluorophenylmethoxymethyl)thiophene (5.03 g, 86% ).

Aufarbeitung

  1. extractionextracted with ether
  2. washThe organic phase was washed with 1N aqueous H3PO4 (3×), H2O (3×), saturated aqueous NaHCO3 (2×), and brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-7211a6dbcfe0433eae7be03d10f925a4
Quelldatensatz
uspto-grants-1997_04
Patentnummer
US05616596

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