(Solved): 2. Utilizing an acetal protecting group, suggest a synthesis scheme for the following conversion. D ...

2. Utilizing an acetal protecting group, suggest a synthesis scheme for the following conversion. Draw the intermediate products. 3. Imitation vanilla extract contains vanillin and propylene glycol. Analysis via GC-MS shows a small quantity of a racemic mixture of a vanillin-propylene glycol acetal. Draw the structure of this acetal (considering stereochemistry) and briefly explain why it is racemic. propylene glycol