Sodium cyanoborohydride → 4-(2,2,2-Trifluoro-1-hydroxyethyl)phenol

HRID 20061

Reaktionsgleichung

Reaktionsgleichung von HRID 20061
[F:1][C:2]([F:13])([F:12])[C:3]([C:5]1[CH:10]=[CH:9][C:8]([OH:11])=[CH:7][CH:6]=1)=[O:4].C([BH3-])#N.[Na+]>ClC(Cl)C.[I-].[Zn+2].[I-]>[F:1][C:2]([F:12])([F:13])[CH:3]([C:5]1[CH:10]=[CH:9][C:8]([OH:11])=[CH:7][CH:6]=1)[OH:4]

Komponenten

5

Edukt 2

HCID 5003444Sodium cyanoborohydrideHCID 114468182,2,2-Trifluoro-1-(4-hydroxyphenyl)ethanone

Produkt 1

HCID 112869774-(2,2,2-Trifluoro-1-hydroxyethyl)phenol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9883512zinc(II)iodideKatalysatorHCID 63651,1-DichloroethaneLösungsmittel

Versuchsvorschrift

To a solution of 2,2,2-trifluoro-1-(4-hydroxyphenyl)ethanone (5.0 g, 26 mmol) in dichloroethane was added zinc iodide (2.7 ml, 39 mmol) followed by sodium cyanoborohydride (10 ml, 197 mmol). The reaction was stirred at RT for 18 h. Both TLC and LCMS showed one product was formed. MS+=175 (desired mass 192—OH). The mixture was filtered through celite and rinsed with dichloromethane. The filtrate was concentrated and dried in vacuum to afford the title compound as colorless oil. MS m/z: 175(M−H2O).

Aufarbeitung

  1. customwas formed
  2. filtrationThe mixture was filtered through celite
  3. washrinsed with dichloromethane
  4. concentrationThe filtrate was concentrated
  5. customdried in vacuum

Quellen und Nachweise

ORD-Eintrag
ord-ee744732b1db40f2af28ba7e8613f7fa
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07745484B2

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