Reaktion #84215

Reaktionsgleichung

3-hydroxy-4-(difluoromethoxy)-benzoic acid methyl ester

K2CO3

NaI

bromo-methylcyclopropane

→

3-(cyclopropylmethoxy)-4-(difluoromethoxy)-benzoic acid methyl ester

Lösungsmittel

water

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe suspension was cooled to room temperature
2. 2
   workup.STIRRINGunder stirring
3. 3
   TemperaturThe heterogeneous mixture was cooled to 0 to 5° C. for 60 to 90 minutes
4. 4
   Filtrationthe solid filtered on a gooch funnel
5. 5
   Waschenwashed with water (50 ml)
6. 6
   SonstigeAn orange solid was obtained
7. 7
   SonstigeIt was dried under vacuum at room temperature

Vorschrift

3-hydroxy-4-(difluoromethoxy)-benzoic acid methyl ester (5 g, 22.9 mmol), K2CO3 (4.75 g, 34.4 mmol), NaI (0.34 g, 2.3 mmol) and bromo-methylcyclopropane (3.7 g, 27.5 mmol) were dissolved in DMF (25 ml), and the heterogeneous mixture was stirred and warmed at 80° C. for two hours. The suspension was cooled to room temperature, and water (50 ml) was added under stirring. The heterogeneous mixture was cooled to 0 to 5° C. for 60 to 90 minutes, and the solid filtered on a gooch funnel and washed with water (50 ml). An orange solid was obtained. It was dried under vacuum at room temperature. (yield 95.8%).

Quelle