1) Give the mechanism for the main D-A reaction, preparation of I

2.)  Give the mechanism for the cracking of dicyclopentadiene, preparation of II

3.)  How was the favored reaction of the dimerization of cyclopentadiene to dicyclopentadiene (the reverse of reaction in 2, above) retarded? Give 2 ways?

4.)  Assuming that some of the maleic anhydride hydrolyzes prior to the D-A reaction, what by-product (impurity) would you expect to be present after the D-A reaction is run?

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