반응 #569993

반응 방정식

p-hydroxybenzoic acid

(-)2-methylbutanol

sulfuric acid

→

p-hydroxybenzoic acid 2-methylbutyl ester

용매

benzene

반응 조건

후처리

1. 1
   온도under heating in a container
2. 2
   기타provided with a Dean-Stark
3. 3
   온도reflux condenser
4. 4
   기타to remove
5. 5
   온도After the reflux for about 11 hours
6. 6
   온도the 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
   세척after being washed by an aqueous solution of sodium carbonate and water

실험 절차

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.

출처