Which of the following are intermediates in the acid catalyzed aldol reaction of propanal to form 2-methyl-2-pentenal?
1)enol
2)enolate
3)tetrahedral carbonyl intermediate
4)aldol
A)only 1 and 2
B)only 1, 3 and 4
C)only 2, 3 and 4
D)1, 2, 3 and 4

Question

Quizplus · Accepted Answer

In an acid-catalyzed aldol reaction, the enol form of the aldehyde is involved, not the enolate. The reaction proceeds through the formation of an enol, which then attacks another carbonyl compound to form a tetrahedral carbonyl intermediate, eventually leading to the aldol product.

Which of the Following Are Intermediates in the Acid Catalyzed