Write the equations involved in the following reactions:(i) Reimer-Tiemann reaction(ii) Williamson synthesis
Question
Write the equations involved in the following reactions:
- (i) Reimer-Tiemann reaction
- (ii) Williamson synthesis
Solution
(i) Reimer-Tiemann reaction:
The Reimer-Tiemann reaction is a chemical reaction used for ortho-formylation of phenols; with the help of chloroform (CHCl3), under basic conditions to form salicylaldehyde.
The general equation for the Reimer-Tiemann reaction is:
Phenol + CHCl3 + KOH → Salicylaldehyde + KCl + H2O
(ii) Williamson synthesis:
The Williamson synthesis is a reaction that is used to prepare ethers from alkyl halides and sodium alkoxides. This reaction is an SN2 reaction in which the alkoxide ion is a nucleophile that displaces the halide ion from the alkyl halide.
The general equation for the Williamson synthesis is:
R-O- Na+ + R'-X → R-O-R' + Na+X-
Where R and R' represent alkyl or aryl groups and X represents a halide ion.
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