Question

The product of Finkelstein reaction X, is not used in which of the following named reaction?

• A. Wurtz reaction
• B. Wurtz-Fittig reaction
• C. Williamson reaction
• D. Fittig reaction

Hint:

When considering the utility of a reaction product, it's essential to match the product with the typical reagents used in subsequent reactions. Alkyl iodides, while versatile, are generally not used in reactions primarily designed for aryl halides.

Answer 1

The Correct Option is D

Analyze the application of alkyl iodides in various reactions.

The Finkelstein reaction typically produces alkyl iodides. We need to consider where these products are utilized:

• The Wurtz reaction and Wurtz-Fittig reaction both use alkyl halides, including iodides, to form new carbon-carbon bonds.
• The Williamson reaction uses alkyl halides to synthesize ethers and can utilize alkyl iodides.
• The Fittig reaction, however, primarily involves aryl halides, and typically alkyl iodides are not used here.

Step 2: Determine the reaction where alkyl iodides are not typically employed.

While alkyl iodides are versatile in many reactions, they are not a common choice for the Fittig reaction, which focuses on coupling aryl halides, not alkyl halides. Thus, the Fittig reaction does not commonly utilize the products of the Finkelstein reaction.

Answer 2

To solve the problem, we need to identify which reaction the product of the Finkelstein reaction X is not used in among the given named reactions.

1. Understanding the Finkelstein Reaction:
The Finkelstein reaction is a halogen exchange reaction where an alkyl halide reacts with a sodium halide to exchange halogen atoms, typically in polar solvents like acetone. This reaction involves the substitution of a halide ion (X) in the organic molecule.

2. Understanding the Given Reactions:

Wurtz reaction: This is a reaction in which two alkyl halides react in the presence of sodium metal to form a symmetrical alkane. The product of the Finkelstein reaction (an alkyl halide) could potentially be used in this reaction.
Wurtz-Fittig reaction: This is a combination of the Wurtz and Fittig reactions, where alkyl halides and aryl halides react in the presence of sodium to form a mixture of alkanes and aryl compounds. The product of the Finkelstein reaction can also be used in this reaction.
Williamson reaction: This reaction involves the formation of an ether by reacting an alkoxide ion with an alkyl halide. The product of the Finkelstein reaction can also participate in this reaction.
Fittig reaction: This reaction involves the formation of biaryl compounds through the reaction of aryl halides with sodium. The product of the Finkelstein reaction (an alkyl halide) is not typically involved in this reaction, which specifically deals with aryl halides, not alkyl halides.

3. Final Answer:
The correct answer is (D) Fittig reaction. The product of the Finkelstein reaction is not used in the Fittig reaction.