3-Hydroxybenzaldehyde → 3-(2,2-difluoroethoxy)benzaldehyde

HRID 594279Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 594279
[OH:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH:5]=[O:6].FC(F)(F)S(O[CH2:16][CH:17]([F:19])[F:18])(=O)=O.C([O-])([O-])=O.[Cs+].[Cs+].O>CN(C=O)C.CCOC(C)=O>[F:18][CH:17]([F:19])[CH2:16][O:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH:5]=[O:6]

Komponenten

7

Edukt 4

HCID 1013-HydroxybenzaldehydeHCID 962WaterHCID 10796Cesium carbonateHCID 27740892,2-Difluoroethyl trifluoromethanesulfonate

Produkt 1

HCID 210714533-(2,2-difluoroethoxy)benzaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A mixture of commercially available 3-hydroxybenzaldehyde (2.000 g; 16.40 mmol), 2,2-difluoroethyl trifluoromethanesulfonate (3.506 g; 16.40 mmol), and Cs2CO3 (8.004 g; 24.60 mmol) in anh. DMF (30 ml) was stirred at rt, under nitrogen, for 17 h. Water and AcOEt were added and the organic layer was washed with water, dried over anh. MgSO4, filtered, and concentrated to dryness under reduced pressure affording 3-(2,2-difluoroethoxy)benzaldehyde as a yellow oil. LC-MS (conditions A): tR=0.67 min.; no ionisation.

Aufarbeitung

  1. washthe organic layer was washed with water
  2. dry with materialdried over anh. MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated to dryness under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-8a1a7b2c83ba4b5aaea350eca51a0eae
Quelldatensatz
uspto-grants-2016_01
Patentnummer
US09242970B2

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