Water → 2,3-Bis(1-phenyl-1-hydroxymethyl)naphthalene

HRID 461444

Reaktionsgleichung

Reaktionsgleichung von HRID 461444
[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[C:3]([CH:11]=[O:12])[C:2]=1[CH:13]=[O:14].[C:15]1([Mg]Br)[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.O>O1CCCC1>[C:15]1([CH:13]([C:2]2[C:3]([CH:11]([OH:12])[C:1]3[CH:10]=[CH:5][CH:4]=[CH:3][CH:2]=3)=[CH:4][C:5]3[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=3)[CH:1]=2)[OH:14])[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1

Komponenten

5

Edukt 3

HCID 962WaterHCID 964002,3-NaphthalenedicarboxaldehydeHCID 178418255HCID 178418255, Verbindung

Produkt 1

HCID 213937502,3-Bis(1-phenyl-1-hydroxymethyl)naphthaleneAusbeute 86,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

2,3-Naphthalenedicarboxaldehyde (10.0 g) in dry tetrahydrofuran (100ml) was added to phenylmagnesium bromide [derived from bromobenzene (53 g) and magnesium (8 g)] in dry tetrahydrofuran (500 ml) over 1 hr. and the solution was refluxed for a further 3 hr. On cooling, water (500 ml) was added and the ethereal layer was decanted. The aqueous slurry was washed with ether (4 × 500 ml) and the combined ethereal extracts were dried (magnesium sulphate) and evaporated to dryness. The residue was purified by chromatography on silica gel and recrystallised from dichloromethane/petroleum ether (b.p. 40°-60°) to yield two isomers of 2,3-bis(1-phenyl-1-hydroxymethyl)naphthalene (III) (8.0 g. m.p. 145° and 3.0 g, m.p. 164°).

Aufarbeitung

  1. temperatureand the solution was refluxed for a further 3 hr
  2. temperatureOn cooling
  3. customthe ethereal layer was decanted
  4. washThe aqueous slurry was washed with ether (4 × 500 ml)
  5. dry with materialthe combined ethereal extracts were dried (magnesium sulphate)
  6. customevaporated to dryness
  7. customThe residue was purified by chromatography on silica gel
  8. customrecrystallised from dichloromethane/petroleum ether (b.p. 40°-60°)

Quellen und Nachweise

ORD-Eintrag
ord-ec42555b67f34b5e82c0293fffbf1762
Quelldatensatz
uspto-grants-1977_12
Patentnummer
US04062955

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