Carbon Tetrachloride → 1-Benzyloxy-3-chloromethyl-7-fluoro-2-methyl-naphthalene

HRID 1261429

Reaktionsgleichung

Reaktionsgleichung von HRID 1261429
C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:20]([Cl:24])(Cl)(Cl)Cl.[CH2:25]([O:32][C:33]1[C:42]2[C:37](=[CH:38][CH:39]=[C:40]([F:43])[CH:41]=2)[CH:36]=[C:35](CO)[C:34]=1[CH3:46])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>C1COCC1>[CH2:25]([O:32][C:33]1[C:42]2[C:37](=[CH:38][CH:39]=[C:40]([F:43])[CH:41]=2)[CH:36]=[C:35]([CH2:20][Cl:24])[C:34]=1[CH3:46])[C:26]1[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=1

Komponenten

5

Edukt 3

HCID 5943Carbon TetrachlorideHCID 11776TriphenylphosphineHCID 59326595(4-Benzyloxy-6-fluoro-3-methyl-naphthalen-2-yl)-methanol

Produkt 1

HCID 593265471-Benzyloxy-3-chloromethyl-7-fluoro-2-methyl-naphthaleneAusbeute 81 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of triphenylphosphine (41.6 g, 159 mmol) in dry THF (190 mL) was added CCl4 (59 mL). The reaction mixture was stirred for 10 minutes and (4-benzyloxy-6-fluoro-3-methyl-naphthalen-2-yl)-methanol (21.5 g, 79.4 mmol) was introduced as a solid at room temperature under nitrogen. The resulting solution was refluxed for 2 hours. The solvent was distilled off under reduced pressure, and the residue was diluted with water. The resulting mixture was extracted twice with ethyl acetate. The combined organic extracts were washed with water and brine, dried over anhydrous sodium sulfate, filtered, and concentrated. Silica gel column chromatography (100-200 mesh, 5% ethyl acetate in hexanes) provided 1-benzyloxy-3-chloromethyl-7-fluoro-2-methyl-naphthalene (18.5 g, 81%) as an off-white solid.

Aufarbeitung

  1. temperatureThe resulting solution was refluxed for 2 hours
  2. distillationThe solvent was distilled off under reduced pressure
  3. additionthe residue was diluted with water
  4. extractionThe resulting mixture was extracted twice with ethyl acetate
  5. washThe combined organic extracts were washed with water and brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-596914fad207402aa3364da1c806be75
Quelldatensatz
uspto-grants-2013_06
Patentnummer
US08470884B2

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