Advertisements
Advertisements
प्रश्न
How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction.
Advertisements
उत्तर
\[\ce{\underset{Propanol}{CH3CH2CH2OH} ->[?]\underset{Propoxypropane}{(CH3CH2CH2)2O}}\]
This reaction can be brought about as –
\[\ce{\underset{Propanol}{CH3CH2CH2OH} + SOCl2 -> CH3CH2CH2Cl}\]
\[\ce{2CH3CH2CH2CH2OH + \underset{(Metal)}{2Na} -> 2CH3CH2CH2CH2\overset{—}{O}N\overset{+}{a} + H2}\]
\[\ce{\underset{1-Chloropropane}{CH3CH2CH2Cl} + \underset{Sodium propoxide}{CH3CH2CH2\overset{—}{O}}N\overset{+}{a} -> \underset{Propoxypropane}{(CH3CH2CH2)2O}}\]
Mechanism:
SN2 attack of propoxide on the halide.
APPEARS IN
संबंधित प्रश्न
Explain the mechanism of the following reaction:
How do you convert the following :
Phenol to anisole
Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
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:
1-Propoxypropane
Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method. Give reason.
Account for the following :
t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of t-butyl methyl ether.
Which of the following cannot be made by using Williamson Synthesis:
The Williamson ether synthesis produces ethers by reacting an
Which of the following compounds gives a secondary alcohol upon reaction with methylmagnesium bromide?
Name the suitable alcohol and reagent, from which 2-Chloro-2-methyl propane can be prepared.
The major product [B] in the following reactions is:
\[\begin{array}{cc}\ce{CH3}\phantom{..................................}\\|\phantom{.....................................}\\\ce{CH3 - CH2 - CH - CH2 - OCH2 - CH3 ->[HI][Heat] [A] alcohol ->[H2SO4][\Delta] [B]}\end{array}\]
Write the mechanism of the following reaction:
\[\ce{2CH3CH2OH ->[H^+][413 K] CH3-CH2-O-CH2-CH3 + H2O}\]
Identify the product (s) is/are formed when 1-methoxy propane is heated with excess HI. Name the mechanism involved in the reaction.
Predict the major product, when 2-methyl but -2-ene is converted into an alcohol in the following method.
Acid catalysed hydration
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
