5-降冰片烯-2,3-二羧酸单甲酯的合成

Synthesis of 5 - Norbornene-2,3-dicarboxylic acid Monomethyl ester

由双环戊二烯热解制得的环戊二烯与顺丁烯二酸酐反应得５－降冰片烯－２，３－二酸酐（ＮＡ），再单甲酯化制得５－降冰片烯－２，３－二羧酸单甲酯（ＮＥ），产品收率可达５６．２％左右，纯度≥９７％。

The synthesis of 5 - norbornene - 2, 3 - dicarboxylic acid monomethyl ester(NE) was described, Maleic anhydride was reacted with cyclopentadiene which has been prepared by thermolysis of dicyclopentadiene to produce 5 -norbornene- 2, 3 -- dicarboxylic anhydride (NA). The title compound was prepared by monoesterified NA with methanol.The yield of the product reached 56. 2% and purity was 97%.