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Diels-Alder Rnx: Reaction of cyclopentadiene with maleic anhydride

  1. Mar 10, 2010 #1
    Why do we have to redissolve the product we get from the reaction of cyclopentadiene with maleic anhydride? Is it to remove the impurities? The endo-norbornene-5,6-cis-dicarboxylic anhydride product I got from the reaction after the second recrystallization had a melting point 24 degrees lower than the expected melting point. What do you think could affect the final product?
  2. jcsd
  3. Mar 11, 2010 #2


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    An impurity. If you want more specific answers, you need to explain your procedure. In most of these cleanups, hot filtration is used which is notoriously difficult for small samples and first-timers. Easy to get the product a bit crapped up.
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