반응 #43993

반응 방정식

1,4-Diethoxy-2,3-naphthalenedicarboxylic acid

thionyl chloride

→

1,4-diethoxy-2,3-naphthalenedicarboxylic anhydride

수율 99.3%

용매

chloroform

반응 조건

후처리

1. 1
   온도at reflux for 1 h
2. 2
   온도The resulting solution was cooled
3. 3
   기타evaporated to dryness
4. 4
   workup.ADDITIONFurther chloroform was added
5. 5
   기타evaporation

실험 절차

1,4-Diethoxy-2,3-naphthalenedicarboxylic acid (25 g, 82 mmol) was added to a solution of thionyl chloride (23.3 g) in chloroform (150 ml) and stirred at reflux for 1 h. The resulting solution was cooled and evaporated to dryness. Further chloroform was added and evaporation repeated to give 1,4-diethoxy-2,3-naphthalenedicarboxylic anhydride as a yellow solid (23.3 g, 99%).

출처