What is the expected major product of the following reaction sequence?
A) I
B) II
C) III
D) IV
E) V

Name: What is the expected major product of the following reaction sequence? A) I B) II C) III D) IV E) V
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Question

What is the expected major product of the following reaction sequence?  
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

The first step is an aldol condensation between acetone and diethyl malonate. This will form a beta-ketoester, which can undergo decarboxylation in the presence of an acid catalyst to form the final product. The major product will be the most stable enol tautomer, which is shown in choice III.

What Is the Expected Major Product of the Following Reaction