Among the given compounds,the correct dehydra | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The rate of dehydration of alcohols depends on the stability of the carbocation intermediate formed after the loss of water.$I$ is phenol,which fo

Vedclass · Accepted Answer

$I < II < III < IV$

Vedclass · Answer

(A) The rate of dehydration of alcohols depends on the stability of the carbocation intermediate formed after the loss of water.$I$ is phenol,which forms a phenyl carbocation $(C_6H_5^+)$ upon dehydration. This is extremely unstable due to the $sp$ hybridization of the carbon atom.$II$ is cyclohexanol,which forms a $2^{\circ}$ alkyl carbocation.$III$ is cyclohex$-2-$en$-1-$ol,which forms an allylic carbocation. This is stabilized by resonance.$IV$ is cyclohexa$-2,5-$dien$-1-$ol,which forms a carbocation that is stabilized by resonance with two double bonds,making it the most stable among the given options.Comparing the stability of the carbocations: Phenyl carbocation $(I)$ Therefore,the correct order of dehydration is $I < II < III < IV$.

Among the given compounds,the correct dehydration order is:

Similar Questions

In which of the following reactions will hydrogen gas not be evolved?

The dehydration of $butan-2-ol$ in the presence of $H^{+}$ yields $[F]$. How many structural isomers of $[F]$ are possible?

Glycerol is a trihydric alcohol. It contains . . . . . .

Which of the following options will not produce $(P)$ as the major product on reaction with dil. $H_2SO_4$?

Which of the following is the most suitable reagent for the conversion of $RCH_2OH$ to $RCHO$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module