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प्रश्न
Account for the following :
t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of t-butyl methyl ether.
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उत्तर
Sodium methoxide is a strong base hence elimination predominates over substitution
\[\begin{array}{cc}
\ce{CH3}\phantom{.............................}\\
|\phantom{...............................}\\
\ce{CH3-C-Cl +CH3O^-Na^+->CH3-C=CH3OH + NaCI}\\
|\phantom{...............................}||\\
\phantom{....}\ce{CH3}\phantom{..............}\phantom{..............}\ce{CH2}
\end{array}\]
William synthesis
\[\ce{R - X + R -\underset{\bullet\bullet}{{}^{\bullet\bullet}_{O}} - Na->R - \underset{\bullet\bullet}{{}^{\bullet\bullet}_{O}} - R + NaX}\]
The alkyl halide must be 1⁰ as the reaction involves the SN2 reaction pathway.
If alkyl halide is 3⁰ then the alkene will be the major product. Hence, 2-methylpropene is formed instead of t-butylmethylether.
संबंधित प्रश्न
How do you convert the following :
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Williamson's synthesis of preparing dimethyl ether is a/an ____________.
Which of the following cannot be made by using Williamson Synthesis:
The Williamson ether synthesis produces ethers by reacting an
Write the equations for the following reaction:
Tert butyl chloride is treated with sodium ethoxide.
Write the name of the reaction, structure and IUPAC name of the product formed when:
\[\ce{CH3CH2CH(CH3)CH(CH3) ONa}\] reacts with \[\ce{C2H5Br}\]
Write the name of reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Short Answer Question.
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
Write the name of reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
2-Methoxy-2-methylpropane
