Реакция #412621

Уравнение реакции

Maleic anhydride

→

7-oxabicyclo [2.2.1]hept-2-ene-5,6-dicarboxylic acid anhydride

Выход 170.0%

Растворители

furan

Условия реакции

Обработка

1. 1
   Температураunder reflux for 1 hour
2. 2
   workup.DISTILLATIONthe excess of furan was distilled off
3. 3
   ДругоеThe residue was recrystallised from chloroform

Методика

Maleic anhydride (50 g) and furan (150 ml) were heated under reflux for 1 hour, and then the excess of furan was distilled off. The residue was recrystallised from chloroform, yielding 72 g of 7-oxabicyclo [2.2.1]hept-2-ene-5,6-dicarboxylic acid anhydride (m.pt. 110° C., decomp.). This anhydride (40 g) and 30.75 g of 2-hydroxyethyl acrylate were heated in 250 ml of toluene at 100° C. for 3 hours, and then the toluene was distilled off under reduced pressure, leaving the desired compound as a viscous liquid.

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