Same chapter3 marksDifficulty: Medium
What is the Reimer-Tiemann reaction, and what does it produce from phenol?
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3 marksDifficulty: Medium
Describe the Williamson synthesis of ethers and state its limitation.
Original Khojo Papers practice question — not from a past board paper.
Answer
An alkyl halide is heated with a sodium alkoxide, and the alkoxide displaces the halide by an SN2 reaction to give the ether. The limitation is that the alkyl halide must be primary; a secondary or tertiary halide undergoes elimination instead and gives an alkene.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
To make an unsymmetrical ether, the bulkier group is therefore taken as the alkoxide.
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