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प्रश्न
How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction.
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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.
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संबंधित प्रश्न
Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
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.
Explain the following with an example.
Williamson ether synthesis
Which of the following cannot be made by using Williamson Synthesis:
Which of the following compounds gives a secondary alcohol upon reaction with methylmagnesium bromide?
Write the equations for the following reaction:
Tert butyl chloride is treated with sodium ethoxide.
Williamson's synthesis of ether is an example of ______.
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.
Write the name of reagent and equation 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.
Predict the major product, when 2-methyl but -2-ene is converted into an alcohol in the following method.
Acid catalysed hydration
What will be the product (X and A)for the following reaction
\[\ce{acetylchloride->[i)CH3MgBr][ii)H3O+]X ->[acidk2crp3]A}\]
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 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
Give the structure and IUPAC name of the metamers of 2-methoxy propane.
