Advertisements
Advertisements
Question
Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
Advertisements
Solution
\[\begin{array}{cc}
\phantom{}\ce{CH3 - CH2 - CH - CH - OH ->[Na] CH3 - CH2 - CH - CH - ONa}\phantom{}\\
\phantom{........................}|\phantom{.........}|\phantom{............................................}|\phantom{.........}|\phantom{...............}\\
\phantom{................}\ce{CH3}\phantom{....}\ce{CH3}\phantom{.....................................}\ce{CH3}\phantom{....}\ce{CH3}\phantom{...}\\
\end{array}\]
\[\ce{C2H5OH ->[HBr] C2H5Br}\]
\[\begin{array}{cc}
\phantom{}\ce{CH3 - CH2 - CH - CH - ONa + C2H5Br}\phantom{}\\
\phantom{.}|\phantom{.........}|\phantom{..........}\\
\phantom{..}\ce{CH3}\phantom{....}\ce{CH3}\phantom{.......}\\
\phantom{}\ce{\downarrow}\phantom{.....}\\
\phantom{}\ce{CH3 - CH2 - CH - CH - OC2H5}\phantom{......}\\
\phantom{.........}|\phantom{.........}|\phantom{..........}\\
\phantom{..........}\underset{\text{2-Ethoxy-3-methylpentane}}{\ce{CH3}\phantom{....}\ce{CH3}}\phantom{.......}
\end{array}\]
APPEARS IN
RELATED QUESTIONS
How do you convert the following :
Phenol to anisole
Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why?
 |
 |
| (i) | (ii) |
Write the name of the reagent and the equation for the preparation of the following ether by Williamson’s synthesis:
2-Methoxy-2-methylpropane
Write the name of the reagent and equation for the preparation of the following ethers by Williamson’s synthesis:
1-Methoxyethane
How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction.
Explain the following with an example.
Williamson ether synthesis
Write the structure of 3-Bromo-2-methylprop-1-ene
Account for the following :
t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of t-butyl methyl ether.
Williamson's synthesis of preparing dimethyl ether is a/an ____________.
Dehydration of alcohol to ethers is catalysed by:
Explain why low molecular mass alcohols are soluble in water.
HBr reacts with \[\ce{CH2 = CH - OCH3}\] under anhydrous conditions at room temperature to give ______.
Which of the following reactions are feasible?
Write the name of reagent and equation for the preparation of the following ethers 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
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.
Identify the product (s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
Consider the following reaction:
Identify products A and B.
