Question

Match the major products obtained in the reactions given in List-I with the corresponding structures in List-II and choose the correct option.

• A. \(P \rightarrow 2;\ Q \rightarrow 1;\ R \rightarrow 5;\ S \rightarrow 4\)
• B. \(P \rightarrow 1;\ Q \rightarrow 2;\ R \rightarrow 4;\ S \rightarrow 5\)
• C. \(P \rightarrow 1;\ Q \rightarrow 2;\ R \rightarrow 3;\ S \rightarrow 4\)
• D. \(P \rightarrow 2;\ Q \rightarrow 1;\ R \rightarrow 3;\ S \rightarrow 5\)

Hint:

Important transformations to remember:
• Hydroximoyl halides in base form nitrile oxides.
• Nitrile oxides may undergo:
• cyclization
• hydrolysis
• rearrangement
• Oxime derivatives often undergo:
• Beckmann rearrangement
• heterocyclic ring formation Always identify:
• reactive intermediate
• neighboring nucleophile
• possibility of intramolecular cyclization before predicting the final product.

Answer 1

The Correct Option is A