Reacción #569993

Ecuación de reacción

p-hydroxybenzoic acid

(-)2-methylbutanol

sulfuric acid

→

p-hydroxybenzoic acid 2-methylbutyl ester

Disolventes

benzene

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturaunder heating in a container
2. 2
   Otroprovided with a Dean-Stark
3. 3
   Temperaturareflux condenser
4. 4
   Otroto remove
5. 5
   TemperaturaAfter the reflux for about 11 hours
6. 6
   Temperaturathe solution was cooled
7. 7
   workup.ADDITIONstripped of sulfuric acid by the addition of ice water
8. 8
   workup.DISTILLATIONThe reaction mother liquor was distilled of benzene
9. 9
   Lavadoafter being washed by an aqueous solution of sodium carbonate and water

Procedimiento

690 g of p-hydroxybenzoic acid, 650 g of (-)2-methylbutanol, 3 l of benzene, and 30 ml of conc. sulfuric acid were stirred under heating in a container provided with a Dean-Stark reflux condenser to remove generated water. After the reflux for about 11 hours, the solution was cooled and stripped of sulfuric acid by the addition of ice water. The reaction mother liquor was distilled of benzene after being washed by an aqueous solution of sodium carbonate and water to obtain oily p-hydroxybenzoic acid 2-methylbutyl ester.

Fuente