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प्रश्न
Write the equations involved in the following reactions : Williamson synthesis
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उत्तर १
उत्तर २
Williamson synthesis: It involves the treatment of an alkyl halide with a suitable sodium alkoxide. The sodium alkoxide needed for the purpose is prepared by the action of sodium on a suitable alcohol. The reaction invlolves the nucleophillic displacement (substitution) of the halide ion from the alkyl halide by the alkoxide ion by SN2 mechanism.
R-OH +2Na → 2R’-O-Na+ + H2
R’-O-Na+ + R-X → R’-O-R +Na+ X
Ether
The second reaction is the substitution nucleophillic bimolecular (SN2) reaction.
For example:
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संबंधित प्रश्न
Explain the mechanism of the following reaction:
Write the name of the reagent and the equation for the preparation of the following ether by Williamson’s synthesis:
1-Propoxypropane
Illustrate with examples the limitations of Williamson synthesis for the preparation of certain types of ethers.
Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method. Give reason.
Williamson's synthesis of preparing dimethyl ether is a/an ____________.
Write the mechanism of the following reaction:
\[\ce{2CH3CH2OH ->[H^+][413 K] CH3-CH2-O-CH2-CH3 + H2O}\]
Write the name of reagents and equations for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Identify the product(s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
Write the names of reagents and equations for the preparation of the following ether by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Consider the following reaction:
Identify products A and B.
