Predict the products of the following proposed Diels–Alder reactions. Problem-s...

Predict the products of the following proposed Diels–Alder reactions.

Problem-solving Hint A Diels–Alder product always contains one more ring than the reactants. The two ends of the diene form new bonds to the ends of the dienophile. The center (formerly single) bond of the diene becomes a double bond. The dienophile’s double bond becomes a single bond (or its triple bond becomes a double bond).