Methyl methacrylate: spot the conditions flaw

Single question

Two-step ACH route to methyl methacrylate: form the acetone cyanohydrin, then run H2SO4 methanolysis to the unsaturated ester. Reactants and reagents are right. Check the temperature on the dehydration.

Acetone cyanohydrin route to MMA

Sulfuric-acid dehydration of amide sulfates

Why the ACH dehydration needs high temperature

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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