Advertisements
Advertisements
प्रश्न
What are the limitations to prepare ether by this method?
Advertisements
उत्तर
Limitations:
- When alcohol is heated with dehydrating agents like concentrated H2SO4 or H3PO4 two products, either ether or an alkene can form depending upon the temperature.
- Use of higher temperature or 2°/3° alcohols gives alkene as the major product.
APPEARS IN
संबंधित प्रश्न
Anisole on heating with concentrated HI gives ______.
Choose the correct option.
Ethers react with cold and concentrated H2SO4 to form ________.
Write chemical equation of acetyl chloride with ethanol
Write the preparation of ethanol from methyl magnesium iodide.
Write the reaction between ethanol and acetic anhydride.
Explain the fact that in alkyl aryl ethers, the alkoxy group is ring activating and ortho/para directing towards electrophilic aromatic substitution.
What is the action of following on diethyl ether?
dil. H2SO4
What is the action of following on diethyl ether?
PCl5
For the preparation of mixed ethers by Williamson synthesis, which of the following combination will give the best yield?
Action of hydrogen iodide on anisole gives ______.
____________ on heating with excess of conc. HI gives two moles of ethyl iodide.
Which of the following statements is INCORRECT for ethers?
To prepare ethanol from methyl magnesium bromide, the other reagent required is ____________.
What are the products of the following reaction?
\[\ce{(CH3)3C - O - CH3 + HI ->[cold] ?}\]
Which of the following compounds does NOT contain \[\begin{array}{cc}\backslash\phantom{.......}\\\ce{C = O}\\
/\phantom{.......}\\\end{array}\] group?
Ether is obtained from ethyl alcohol in presence of H2SO4 at _______.
The major product of the reaction between tert-butyl chloride and sodium ethoxide is ______.
The compound which is not formed when a mixture of n-butyl bromide and ethyl bromide treated with sodium metal in the presence of dry ether is ______.
Isopropyl methyl ether when treated with cold hydrogen iodide gives ______.
Tert-butyl methyl ether on treatment with hydrogen iodide in cold gives ______.
Why ethers possess a small net dipole moment?
Explain Williamson's synthesis.
Write preparation of diethyl ether.
