Predict the product, when 4-methyl-2-hexanone reacts with hydrazine in the presence of an acid catalyst.
A) I
B) II
C) III
D) IV
E) V

Question

Predict the product, when 4-methyl-2-hexanone reacts with hydrazine in the presence of an acid catalyst.  
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

The reaction of 4-methyl-2-hexanone with hydrazine in the presence of an acid catalyst results in the formation of a hydrazone. The hydrazone product can have different possible structures depending on the position of the carbonyl group and the substituents on the hydrazine. In this case, the 4-methyl-2-hexanone has a carbonyl group at position 2 and a methyl group at position 4. When hydrazine reacts with this compound, it can attack either at the carbonyl carbon or at the methyl carbon. However, attack at the carbonyl carbon is usually preferred, resulting in the formation of the hydrazone II. Therefore, the correct answer is B.

Predict the Product, When 4-Methyl-2-Hexanone Reacts with Hydrazine in the Presence