Which of the following is least likely to be found in the product mixture which results when 2-iodopentane reacts with sodium ethoxide in ethanol?
A)1-ethoxypentane
B)2-ethoxypentane
C)(Z)-2-pentene
D)(E)-2-pentene
E)1-pentene

Question

Quizplus · Accepted Answer

The reaction described involves 2-iodopentane reacting with sodium ethoxide in ethanol, which is a classic example of a nucleophilic substitution reaction (SN2). In this reaction, the ethoxide ion acts as a nucleophile and attacks the carbon atom bonded to the iodine in 2-iodopentane, leading to the formation of 2-ethoxypentane as the primary product. The reaction conditions do not favor elimination, so the formation of alkenes (C, D, E) is possible but less likely than substitution. However, the formation of 1-ethoxypentane (A) is least likely because it would require a rearrangement that does not typically occur in SN2 reactions.

Which of the Following Is Least Likely to Be Found