tert-Butanol → Tert-butyl 4-(bromomethyl)benzoate

HRID 907232

Reaktionsgleichung

Reaktionsgleichung von HRID 907232
[Br:1][CH2:2][C:3]1[CH:11]=[CH:10][C:6]([C:7](Br)=[O:8])=[CH:5][CH:4]=1.[C:12]([OH:16])([CH3:15])([CH3:14])[CH3:13]>C(Cl)Cl>[C:12]([O:16][C:7](=[O:8])[C:6]1[CH:10]=[CH:11][C:3]([CH2:2][Br:1])=[CH:4][CH:5]=1)([CH3:15])([CH3:14])[CH3:13]

Komponenten

4

Edukt 2

HCID 6386tert-ButanolHCID 46406714-Bromomethyl benzoyl bromide

Produkt 1

HCID 11414578Tert-butyl 4-(bromomethyl)benzoateAusbeute 53,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

4-Bromomethylbenzoyl bromide (13.9 g, 50 mmol, 1.0 eq) was added to 50 mL of DCM, followed by t-butanol (9.6 mL, 100 mmol, 2.0 eq) and the mixture was slowly warmed to room temperature. After 20 hours, the reaction was concentrated under reduced pressure, dissolved into 350 mL EtOAc, washed with 400 mL sat. bicarbonate and 200 mL saturated aqueous NaCl. The organic was dried over MgSO4, filtered, and concentrated under reduced pressure to yield intermediate (19a) as a semisolid (7.3 g).

Aufarbeitung

  1. concentrationthe reaction was concentrated under reduced pressure
  2. dissolutiondissolved into 350 mL EtOAc
  3. washwashed with 400 mL sat. bicarbonate and 200 mL saturated aqueous NaCl
  4. dry with materialThe organic was dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-7af61c07c1924ed583535a36191f4ca6
Quelldatensatz
uspto-grants-2011_09
Patentnummer
US08013005B2

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