Advertisements
Advertisements
Question
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Advertisements
Solution
In the presence of conc. acids such as H3PO4 and H2SO4 alcohols undergo dehydration to yield alkenes.
\[\ce{\underset{Ethanol}{H3C - CH2 - OH} ->[conc{.} H+/\Delta] \underset{Ethene}{CH2 = CH2} + H2O}\]
The mechanism for this reaction is:
Step 1: Protonation of ethanol:
Step 1: Formation of carbocation:
Step 3: Formation of ethene and regeneration of proton:
APPEARS IN
RELATED QUESTIONS
Write the final product(s) in each of the following reactions:
Show how will you synthesize pentan-1-ol using a suitable alkyl halide.
Give the equation of the following reaction:
Dilute HNO3 with phenol.
Write the mechanism (using curved arrow notation) of the following reaction :
Lucas test is used for the detection of _____________.
By which of the following methods alcohol can be prepared in excellent yield?
Which of the following are used to convert RCHO into RCH2OH?
(i) H2/Pd
(ii) LiAlH4
(iii) NaBH4
(iv) Reaction with RMgX followed by hydrolysis
Which of the following is not true in case of reaction with heated copper at 300°C?
Cyclohexene is best prepared from cyclohexanol by which of the following:
During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is ____________.
The process of converting alkyl halides into alcohols involves ______.
Name the factors responsible for the solubility of alcohols in water.
Explain why is OH group in phenols more strongly held as compared to OH group in alcohols.
Which of the following observation is shown by 2-phenyl ethanol with Lucas Reagent?
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene
