反应详情

In a reactor, cyclopentadiene (66 g) was charged, and tetrahydrofuran solvent (500 g) and maleic anhydride (98 g) were added thereto, and the mixture was stirred homogeneously. To the reaction mixture, pure ethanol (500 g) was added and the reaction was carried out with stirring at 50° C. for 8 hours. when the reaction was completed, the solvent was removed by using a rotary evaporator, and the residue was distilled under reduced pressure to obtain 156 g (yield: 87%) of mono-methyl cis-5-norbornene-endo-2, 3-dicarboxylate represented by chemical formula XI.

1. stirringwith stirring at 50° C. for 8 hours
2. customthe solvent was removed
3. customa rotary evaporator
4. distillationthe residue was distilled under reduced pressure