Imidazole → Methyl {[tert-butyl(dimethyl)silyl]oxy}(4-methoxyphenyl)acetate

HRID 1171771Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1171771
[CH3:1][C:2]([Si:5](Cl)([CH3:7])[CH3:6])([CH3:4])[CH3:3].N1C=CN=C1.[OH:14][CH:15]([C:20]1[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=1)[C:16]([O:18][CH3:19])=[O:17].O>CN(C=O)C>[Si:5]([O:14][CH:15]([C:20]1[CH:21]=[CH:22][C:23]([O:26][CH3:27])=[CH:24][CH:25]=1)[C:16]([O:18][CH3:19])=[O:17])([C:2]([CH3:4])([CH3:3])[CH3:1])([CH3:7])[CH3:6]

Komponenten

6

Edukt 4

HCID 795ImidazoleHCID 962WaterHCID 28928tert-Butyldimethylsilyl chlorideHCID 523496Methyl 2-hydroxy-2-(4-methoxyphenyl)acetate

Produkt 1

HCID 86623126Methyl {[tert-butyl(dimethyl)silyl]oxy}(4-methoxyphenyl)acetateAusbeute 97,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

TBDMSCl (1.5 g, 9.94 mmol) and imidazole (1.0 g, 14.6 mmol) were added to a solution of methyl hydroxy-(4-methoxyphenyl)acetate (Teodozyj Kolasa et al., J. Org. Chem., 1987, 22, 4978-4984) (1.3 g, 6.62 mmol) in DMF (8 mL) and the mixture was stirred at r.t. for 2 h. Water was added and the mixture was extracted with diethyl ether. The organic layer was washed with brine, dried (MgSO4), filtered and concentrated to give the title compound (2.0 g, 97%).

Aufarbeitung

  1. extractionthe mixture was extracted with diethyl ether
  2. washThe organic layer was washed with brine
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-8c065bb14b334bd5901077221dadb90f
Quelldatensatz
uspto-grants-2010_11
Patentnummer
US07829707B2

Notizen zur Reaktion

Wird geladen…