N-Ethylmaleimide: spot the conditions flaw

Single question

One-step preparation of NEM from maleic anhydride plus ethylamine. The substrate, the reaction class, and the product all match. Check the solvent and the base.

Anhydride to imide via dehydrative cyclization

Why aqueous base does not deliver an imide

Maleimide hydrolytic stability

Find the flaw

Click the step that contains the flaw, or pick “No flaw” if you think every step is correct.

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