Reacción #335659

Ecuación de reacción

selenium dioxide

dioxane

2-acetylthiophene

→

2-thiopheneglyoxylaldehyde

Disolventes

water

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturathe mixture was refluxed for 4 hours
2. 2
   Temperaturacooled
3. 3
   Filtraciónfiltered
4. 4
   Otroevaporated under reduced pressure
5. 5
   workup.DISTILLATIONThe residue was distilled

Procedimiento

Al mixture of 27.5 g of selenium dioxide, 160 ml of dioxane and 5.5 ml of water was heated at 55° C. until solution was complete. A 31.54 g portion of 2-acetylthiophene was added and the mixture was refluxed for 4 hours, then cooled, filtered and evaporated under reduced pressure. The residue was distilled giving 24.5 g of 2-thiopheneglyoxylaldehyde.

Fuente