Diels-Alder Reaction

Which diene would be more reactive in a Diels-Alder reaction and why?



A. 2, because it can transform into the cis conformation.

B. 2, because it is in a trans conformation.

C. 1, because it is very electrophilic.

D. 1, because it can transform into a trans conformation.

E. 1, because it is in a cis conformation.

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