Williamson synthesis is used to obtain

Options

A. Primary alcohol
B. Ether
C. Aldehyde
D. Ketone

Explanation

**Step-by-Step Solution:**

1. **Understanding Williamson Synthesis**:
Williamson synthesis is a method used in organic chemistry to prepare ethers. It involves the reaction of an alkoxide ion with an alkyl halide.

2. **Identify the Reactants**:
In Williamson synthesis, the main reactants are:
- An alkoxide ion (R-O⁻), which is derived from an alcohol.
- An alkyl halide (R'-X), where X is a halogen (like Cl, Br, or I).

3. **Mechanism of Reaction**:
- The alkoxide ion, which has a negative charge on the oxygen atom, acts as a nucleophile.
- It attacks the carbon atom of the alkyl halide that is bonded to the leaving group (the halogen).
- The bond between the carbon and the halogen breaks, allowing the alkoxide to form a new bond with the carbon, resulting in the formation of an ether.

4. **Formation of Ether**:
- The product of this reaction is an ether (R-O-R'), where R and R' are the alkyl groups from the alkoxide and alkyl halide, respectively.

5. **Conclusion**:
- Therefore, Williamson synthesis is specifically used to obtain ethers, not primary alcohols, aldehydes, or ketones.

**Final Answer**: Williamson synthesis is used to obtain **ethers**.

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