9701 MCQ Solution 66

Question 66: [Organic > Halogen Derivatives]

The reaction scheme outlines the production of one of the monomers of nylon 66 from compound X.

Which compound could be X?

A BrCH₂CH₂CH₂CH₂Br

B CH₂=CHCH=CH₂

C HOCH₂CH₂CH₂CH₂OH

D HO₂CCH₂CH₂CH₂CH₂CO₂H

Reference: Past Exam Paper –June 2003 Paper 1 Q26

Solution 66:

Answer: A.

In option A, the halogenoalkane has Br atoms which are replaced with CN groups by nucleophilic substitution. In option B, the alkene does not react with KCN. In option C, the alcohol does not react with KCN. In option D, the carboxylic acid does not react with KCN. Thus option A is the correct answer.