Question

The reaction is called :

• A. Etard reaction
• B. Gatterman - Koch reaction
• C. Williamson synthesis
• D. Williamson continuous etherification process

Answer 1

The Correct Option is C

The given question asks us to identify a reaction based on its name from the options provided. The correct answer to the question is the "Williamson synthesis."

Let's understand what each reaction in the options refers to:

1. Etard Reaction: This reaction is used for the oxidation of aromatic methyl groups to aldehydes using chromyl chloride. It is not related to the formation of ethers.
2. Gatterman - Koch Reaction: This reaction forms benzaldehyde from benzene using carbon monoxide and hydrochloric acid in the presence of a Lewis acid. It's a method to produce aromatic aldehydes.
3. Williamson Synthesis: This is a method used for the preparation of ethers. It involves the reaction of an alkoxide ion with a primary alkyl halide to form an ether. The general form of the reaction is: \text{R-O}^- + \text{R'-X} \rightarrow \text{R-O-R'}, where R is the alkyl group from the alcohol and R' is from the alkyl halide.
4. Williamson Continuous Etherification Process: This is an industrial process similar to Williamson synthesis but used on a continuous basis for ether production.

Based on the definitions above, only the Williamson Synthesis directly describes a method for producing ethers, which is the typical context when referring to a synthesis reaction involving general reactants such as alkoxides and alkyl halides.

Hence, the correct answer is the Williamson Synthesis.