When setting up a Diels-Alder reaction involving maleic anhydride, it is required that moisture-free conditions be maintained throughout the reaction. What is the reason(s) for this experimental requirement?
Maleic anhydride is toxic and hard to purify from the final product.
The maleic anhydride adduct formed in the reaction can undergo hydrolysis in the presence of water (moisture).
The solvent used in the reaction interacts unfavorably with water (moisture).
The diene in the reaction is decomposed by water (moisture).