Reaktion #82475

Reaktionsgleichung

sodium chloride ethyl acetate

2-Methoxybenzeneboronic acid

Methyl 3-bromobenzoate

sodium carbonate

→

methyl 3-(2-methoxyphenyl)benzoate

Ausbeute 64.0%

Lösungsmittel

toluene

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigefitted with a reflux condenser
2. 2
   Temperaturthe mixture was heated
3. 3
   Temperaturat reflux for two days
4. 4
   SonstigeThe organic materials were separated
5. 5
   Trocknendried (MgSO4)
6. 6
   Einengenthen concentrated under reduced pressure
7. 7
   SonstigeThe residue was purified by flash chromatography (SiO2, gradient hexane to 8:1 hexane/ethyl acetate) which

Vorschrift

Methyl 3-bromobenzoate (1.99 g, 9.25 mmol), tetrakis(triphenylphosphine) palladium(O) (110 mg), sodium carbonate (2.04 g, 19 mmol in 5 ml water) and toluene (10 ml) were degassed under nitrogen in a 25 ml flask fitted with a reflux condenser. 2-Methoxybenzeneboronic acid (1.46 g, 9.61 mmol) in toluene (1 ml) was added and the mixture was heated at reflux for two days then mixed with 1:1 saturated sodium chloride/ethyl acetate (15 ml). The organic materials were separated, dried (MgSO4) then concentrated under reduced pressure. The residue was purified by flash chromatography (SiO2, gradient hexane to 8:1 hexane/ethyl acetate) which gave methyl 3-(2-methoxyphenyl)benzoate (1.43 g, 64%), m.p.: 92°-93° C.

Quelle