Question Detail
Question
What is the product when an aldehyde reacts with an alcohol in the presence of dry HCl?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Aldehydes react with alcohols under acid catalysis to form hemiacetals (RCH(OH)OR') and then acetals (RCH(OR')₂). Ketones form ketals similarly.
Hint
Protecting group for carbonyls.