Reacción #324584

Ecuación de reacción

1-(5-bromo-2-fluorophenyl)-1-propanol

1-(5-Bromo-2-fluorophenyl)-1-propanol

aluminium oxide

pyridinium chlorochromate

→

crude title compound

1-(5-Bromo-2-fluorophenyl)-1-propanone

Disolventes

dichloromethane

Condiciones de reacción

Tratamiento posterior

1. 1
   FiltraciónThe mixture was then filtered through silica gel (200 g, 0.06-0.2 mm) which
2. 2
   Lavadowas thoroughly washed with dichloromethane (1000 ml)
3. 3
   LavadoThe combined filtrates were washed with brine
4. 4
   Secadodried over sodium sulfate
5. 5
   Concentraciónconcentrated under reduced pressure

Procedimiento

A mixture of 10 g (42.9 mmol) 1-(5-bromo-2-fluorophenyl)-1-propanol (Example 5A), 8.75 g (85.8 mmol) neutral aluminium oxide and 18.5 g (85.8 mmol) pyridinium chlorochromate in dichloromethane (100 ml) was stirred at room temperature for 4 h. The mixture was then filtered through silica gel (200 g, 0.06-0.2 mm) which was thoroughly washed with dichloromethane (1000 ml). The combined filtrates were washed with brine, dried over sodium sulfate and concentrated under reduced pressure. The crude title compound thus obtained (8.6 g, 87% of th.) was used in the next step without further purification.

Fuente